Physics Final Exam

a scalar quantity that does not have a direction

a scalar quantity that includes speed and direction

the change in velocity per unit of time

the speed at that instant

when objects are free falling what is the acceleration?

what is the direction of acceleration of falling objects?

do objects in free fall speed up or slow down as they fall?

is an object that is free falling have a constant speed?

at the top of an objects path, the speed at the top is ____?

what is the slope of a displacement time graph?

what is the slop of a velocity-time graph?

what is the area under a velocity-time graph?

what is the area under an acceleration time graph?

vertical and horizontal velocities are completely ______ of each other?

the maximum range when an object is projected at is ___?

if an object is projected at an angle the horizontal velocity is the __for the entire trip and the vertical velocity will __as it goes up and __up as it goes down.

an object will remain its present state of motion unless an outside force acts on it.

the measure of inertia

force causes acceleration

forces always come in ___?

for every action there is an opposite and equal reaction

objects of different mass will have different weights so there is a different ___ acting on each.

if you are in an elevator accelerating upward you would appear to weigh ___?

if you are in an elevator accelerating downward you would appear to weigh ___?

if you are in an elevator moving at a constant speed you would appear to weigh ___?

if you are in an elevator at free fall you would appear to be ___?

always in the opposite direction of the motion

always perpendicular to the surface

the distance traveled per unit of time

the angle traveled through per unit of time

velocity of an object in circular motion is always tangent to the circular path

to maintain circular motion there must be a ___ directed toward the center of the path.

constant _ is possible during circular motion but constant _ is not possible because the direction is constantly changing which means the object is accelerating.

there is an attractive force between all objects proportional to the product of their masses and inversely proportional to the square of the distance between them. This means as the masses increase the force increase by the same factor and if the distance increases the force will decrease by the square of that factor of distance increase.

what are the units for work and energy?

the force on an object times its displacement

what is power measured in?

the work done per unit of time

the energy an object has due to its distance above the ground

the energy due to the compression or elongation of a spring

the energy due to the objects speed

gravitational potential energy can be converted to ___ and vice versa.

___ can be done to produce a change in kinetic energy.

mass times velocity

mass times the change in velocity

____ is always conserved in collisions.

a collision in which both the momentum and kinetic energy is conserved like billiard balls

collision in which momentum is conserved but kinetic energy is not and the objects stick and move together after the collision

force times the radius of the lever arm

to get maximum torque increase the radius of the lever arm, apply force _ to the lever arm, and increase the _?

carries energy from one place to another

time to complete one cycle

the distance from one wave crest to the other

the amount of wave fronts or beats per second

height of the wave

apparent change in frequency due to the speed or source of the observer

sound waves require a __ to travel through

beats can be heard when two tuning forks have almost the same __ and are sounded together