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1 -- Part 2: Kinematics: Motion

- It is important to understand the mathematical language of physics.
- This text helps develop this skill.
- In this type of problem, you have to work backwards: you are given one or more equations and are asked to use them to create a sketch of a process.
- You can use the sketch to create a diagram of a process that is in line with the equations and sketch.
- The equations could be used to solve the word problem.
- There are many possible word problems for a mathematical description.

- A sketch, motion diagram, kinematics graphs, and a verbal description of a situation that is con position-versus-time and velocity-versus-time is needed.
- There are many graphs of the process.
- The tions that the equation describes are the same.

- The general equation for the linear motion axis looks like a spe slope and a +5.0 m intercept.
- The object is indicated by the sign in front of the 3.0 m/s.

- Imagine that the object of reference is a run and that the equation represents positive.

- The object of reference is the runner.

- The person on the bench is moving towards the runner.

- The situation is shown in a motion diagram.
- The spacing of the dots and the lengths of the velocity arrows show that the object of interest is moving at the same rate as the observer.

- The per bench is the object of reference and observes.

- The object of the runner is a runner.
- The process is described by the interest moving toward the same equation as in the example: a person on a bench.

- An initial sketch and motion diagram should be consistent with the equation and the new object of reference.

- A consis tent motion diagram and an initial sketch are shown to the right.

- Let's apply some representation techniques to linear motion.

- A process is represented by the following interest.

- To describe a process that is consis tent with this equation, use the equation to construct an initial sketch, motion diagram, and words.

- The equation appears to be an application.
- The path it travels is the result of di.
- The car's speed and acceleration are positive.

- The van has 2 tion on it.

- Imagine that the equation describes the motion of a car passing a van on a straight highway.
- The car is moving faster than the van.
- The car goes at a rate of 2.0 m>s2 with respect to the van.
- The van is the object of reference, the positive direction is the direction in which the car and van are moving.
- There is a sketch of the situa tion.

- At the start of the Equa, there is a mathematical representation that describes the motion of a cyclist.

- The cyclist is traveling in a certain direction.
- We can check the consistency of the different observing of the cyclist when the person starts.

- They are in this case.

- We will walk you through the motion in this chapter, which represents a car's 12 others.
- An example problem has a time interval of 10 strategy.

- The object of interest is the car.
- The problem is the object of reference.
- Pick the object that interests you.

- The car is moving in a coordinate system with the plus sign.
- From the graph, we can see that the car is moving in a positive direction.

- An initial sketch is created.

- The car is modeled as a point-like object moving along a straight line.
- The magnitude of the velocity is decreasing and the velocity arrows get increasingly smal.
- We draw a diagram.

- If needed, draw motion diagrams and graphs.

- To find the answer to the question you are investigating, use the known information in the first equation to solve the equations.

- Evaluate the results to see if they are reasonable.

- The car's position when it stops is able values.

- The units are correct and the magnitudes are reasonable.

- The car should never stop in the case of zero acceleration.

- The result of dividing a nonzero quantity by zero is zero.
- It takes an infinite time for the car to stop.
- The limiting case is checked out.

- Even though the cyclist's speed decreased, the acceleration is positive.

- According to Mike, its original position is 16-48 m2 and its acceleration is 1-2.0 m.

- Explain how to correct his answer if yes.

- In this chapter, we learned about two simple models of motion--lin ear motion with constant velocity and linear motion with constant accelera tion.
- The motion of objects is a special case of linear motion.

- The following experiment is observational.
- Take out a sheet of paper from your notebook and hold it in one hand.
- Drop the text book on the floor parallel to the floor in the other hand.

- The book is the first to land.
- Drop every 0.10 s.

- They land at the same time.

- The first person to realize that it was easier to answer this question if he considered the motion of falling objects was Galileo Galilei.
- Galileo thought that free fall was the same for all objects regardless of mass and shape.

- Galileo thought that the speed of the objects was increasing as they moved closer to Earth.

- The speed increases in the simplest way if the time of flight is used.
- Galileo didn't have a video camera or a watch to test his hypothesis.

- The speed of the bal should increase with time if the hypothesis is correct.
- The origin of the coordinate axis is at the initial location of the bal.

- The average velocity is determined by dividing the displacement of the ball between consecutive times by the time interval.
- 0.200 s is (0.196 m - 0.049 m)

- A straight line is the best-fit curve for this data.
- The metal ball's motion is modeled as motion with constant acceleration.

- direction is not the same.
- The minus sign is in front of the 9.8 m>s2.

- The table has position and time data for a ball.

- A motion diagram is the same at all clock readings.

- The positive direction is moving in the right direction.

- The slope of the line remains at rest.

- The highest point is zero.

- The highest point has an acceleration of 9.8 m/s2.

- A car is behind a van.

- The driver of the van suddenly slams on the brakes to avoid an accident.

- The driver's reaction time is 0.80 s and the car's acceleration is also 9.0 m>s2.

- We have two objects of interest and we represent this situ ation for each vehicle.

- Capital letters are used to indicate quantities referring to the van and lowercase letters are used to indicate quantities referring to the car.

- The process begins when the van stops.
- The van's final position is the driver starting to brake.

- The front bumper of the car is where the position of the car is.
- The van's position is determined by its 45 m rear bumper.

- There is a 55 m graph line for each vehi cle.

- The van would stop about 10 m from where the car would stop.
- The distance the van travels while stopped can be determined by the equation.

- The car traveled at 25-m/s constant velocity.

- The car is traveling at 18 m/s.
- The van was moving slower than usual.
- When the car started to brake, the subscript 0 was the car.
- When the driver sees the van start slow, they both slowed down at the same rate.
- The subscript 1 shows when the car's speed was greater than the driver's.

- The eling was at 30 m/s.

- The car slows down at a rate of 10 m>s2 after applying the brakes.
- The second car has a 1.0-s reaction time according to the subscript 2.
- The car stops moving.
- This part of speed has decreased to 20 m/s.

- Explain why tailgating accidents occur.

- The general elements of physics knowledge should be matched with the appropriate examples.

- I woke up at 7 am.

- The point-like object (3) was born on November 26.

- He should have a free fall.

- Rolling ball is a physical phenomenon.

- Figure Q1.10 shows a graph for a moving object.

- When the object moves at constant velocity, a sandbag hangs from a rope attached to a hot air bal.
- The rope connecting the bag to the bal oon is cut.
- Observer 1 is in a hot air balloon while observer 2 is on the ground.

- A second small ball is dropped by you.
- When 1 and 2 see it go up and down.

- An apple falls.

- There are two small metal balls in your possession.

- The car is travelling at 12 m/s.
- The origin of statements that are not correct is a stoplight.

- Your car's speed decreases when you apply the brakes.

- You throw a smal bal.
- The correct statement should be chosen.

- It did 6.0 m/s2 in flight for the first time.

- You notice the time it takes to come back when you throw a small ball upward.

- He has a speed of 13 m/s.

- You can give an example of each.

- The object of reference should be specified.

- Give an example if that is the case.

- Give an example if that is the case.

- Your sister has a toy truck.

- You throw a ball.

- You need to figure out the time interval in seconds to solve the problem.

- The level of difficulty of the problem is indicated by the information.

- The speed at which the speedometer reads is 65 miles per hour.

- A car starts at rest and goes fast.
- It was km/h and m/s.
- Then it slows down until it reaches the next stoplight.
- Represent the motion with a mo jet aircraft that can travel at three times the speed of sound.

- Estimate the rate at which your hair grows.
- You are watching the ground.
- Indicate any assumptions you made.

- A man is looking through a slit in a van in opposite directions.

- She knows the distance between the two exits is 1.6 km.

- A car is moving fast.

- You can make a map of the path from where you live.
- Represent the situation with a diagram.

- A hat falls off a man's head.
- Draw a reach the classroom from where you live and your average motion diagram representing the motion of the hat as seen by speed.

- You drive 100 km east, do some sightseeing, and then turn where each observer is and what she is doing.
- You stop for lunch when you drive 50 km west.

- The interval within which the initial position object of reference and coordinate axis is known is determined by choosing an its.

- Your friend took 17,000 steps in 6.

- Two friends were caught in a storm.

- They saw lightning from a distant cloud four seconds later.
- The axis should be changed so that thunder can be heard.

- Use significant digits as 8 to write your answer.
- The front door is where you recorded your position.

- The data should be examined.

- You can use a position-versus-time graph.

- The planet Earth is 4.22 0.01 light-years away.

- Determine the length of 1 light-year and convert it to meters.

- Spaceships traveling to other planets in the solar system move at an average speed.

- Jim is 300 m ahead of the patrol car.

- If Xena's position is zero and Gabriele's position is 3.0, you run the final third at a speed of 6.0 miles per hour.

- A car is going 100 km.
- At an average speed of 50 km/h, it travels the first 50 km.

- When 100 m apart, Jane and Bob see each other.

- The observer should be specified.

- A car goes from rest to 10 m/s in 30 seconds.

- Gabriele enters an east-west straight bike path at 3.0 km and rides west at a constant speed of 8.0 m/s.

- The time where the speed limit is 25 m/s (55 mph) is determined by the average speed of the two cars during the collision.
- A highway patrol interval needed to stop and the stopping distance for each car car observes him pass and quickly reaches a speed of 36 m/s.

- The reference frame should be specified.

- A bus leaves an intersection.
- Indicate any assumptions you made.

- A jogger is running at a fast pace.
- The bus is going from a speed of +6 m/s to +20.0 m/s in 8.0 seconds.
- Determine its jogger's speed with the same speed.

- A person's motion is seen by another person.

- If her racket pushed the ball for a distance of 0.10 m. When the person's speed becomes zero, what was the time interval for the racket-ball?

- Lance was cycling at 10 m/s.
- The distance record for being shot from a cannon magnitude 1.2 m>s2 was set by David "Cannonbal" Smith in 1998.
- What do you have to do to get to (56.64 m)?

- An automobile engineer found that the bumper of the truck was 180 m>s2 because of the impact that creased from 80 km/h to zero with an average acceleration liding of 16 km/h.
- What do you know about Smith's flight indent?
- The truck stopped.

- The leader of the 40 was Col. John Stapp.
- On Stapp's final sled run, point in different directions, allowing them to change sleds at a speed of 284.4 m/s.
- They can accelerate to 1.2 m>s2 when swimming at a speed of 0.15 m/s or stopped with the aid of water brakes.
- The 0.15 m/s to 0.45 m/s is how fast he should be.

- A maximum speed of 11 m/s 41 was reached by Bolt.
- In 1977 Kitty O'Neil ran the 100m dash in 2.0 s.

- He ran the last part of the race at his maximum 20 s to stop, but he didn't know what time interval was needed to complete the race.

- A bus is moving fast.

- You want to know how fast your car goes.

- During the second 1.0 s, 6.0 m during the third 1.0 s, the runners continue to have the same acceleration.

- A car was hit by a meteorite in 1992, causing it to change speeds from -10 m/s to -20 m/s.

- You can use the graph to see their initial positions.

- Two cars are shown in a diagram.

- The clock is indicated by the number near each dot.
- When a car passes a location, an object moves so that its position changes in a second.

- Car 1 will determine when the object stops.

- Car 2 quantities concerning the motion, a story describ ing the motion consistent with the functions, and draw 64.
- There are a lot of possibilities.

- This is a two part process.

- The graphical representations are used.
- You accidentally dropped an eraser out of the window to find out where they were.
- The result should be confirmed with 15 m above the ground.

- Two cars are next to each other on a road.

- The first car is traveling at 30 m/s and the second car is traveling at 24 m/s.

- Represent the motions of the car.
- You throw a tennis ball.
- The initial speed is about 12 m/s.
- Is 12 m/s realistic for an object that you can walk on.

- While skydiving, your parachute opens and you slow down.

- 50.0 m/s to 8.0 m/s in 0.80 s.

- If you throw your helmet upward, use some reasonable numbers.
- If you hit an unpro above your hands, the helmet will rise to estimate the puck's acceleration.
- What was the initial speed of the helmet?

- You are standing in a canyon.
- The place where the rock stopped burning is where you dropped it.
- Listen to the sound of the accelera hitting the bottom.
- How deep is the rocket?
- How was your solution made?
- Take a look at their effect.

- The data can be used to determine the driver's time.
- Your friend is holding a ruler.
- You place your fingers on the sides of the ruler without touching it.

- The friend dropped the ruler without warning.
- You catch vehicles.

- When entering the water, estimate their speed and time to reach the water.

- The Leaning Tower of Pisa is 55 m high.

- A person is moving up and down in the hot air.
- At a constant speed of 7.0 m/s, the time interval needed to pass a semi-trailer bal oon needs to be estimated.
- The truck is on the highway.
- She accidentally releases the bag if you are on a two-lane highway.

- If there are any assumptions used in your estimate, tell me about them.

- You are traveling in your car on a one-way bridge.
- They are 100 m apart when they are behind the same car.
- Car A's speed decreases at 7.0 m/s each other car slams on the brakes to stop for a pedestrian who is second and Car B's speed decreases at 9.0 m/s each second.
- Do the crossing.

- The maximum speed of the cars is 0.60 s.

- You are driving a car.

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