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Motion And Forces Assessment Review
Test Description: Motion and Forces Assessment Review
Instructions: Answer all questions to get your test result.
1) Which car in a race has the lowest average speed?
A
the car that crosses the finish line second
B
the car that is behind all the others
C
the car in the middle of the pack
D
the car that is in front of all the others
2) What information is needed to estimate the amount of potential energy of an object on a shelf?
A
the mass of the shelf and mass of the box
B
the volume and mass of the box
C
the volume of the box and height of the shelf
D
the mass of the object and the height of the shelf
3) How do you know whether or not a person is working?
A
by if they are moving an object
B
by how long they are sitting on the job
C
by how fast they are walking
D
by how long they are standing on the job
4) When does an object have the least amount of kinetic energy?
A
when it stops
B
when it changes directions
C
before it starts
D
when it is falling
5) How does a can opener make it easier to open a can?
A
it increases the force applied to the can
B
the friction keeping the can sealed decreases
C
the surface area of the can decreases
D
the amount of gravity acting on the can increases
6) Which simple machine increases the distance over which a load travels and reduces the needed force?
A
pulley
B
inclined plane
C
wedge
D
wheel and axle
7) Which simple machines are used to form a wheelbarrow?
A
inclined plane, wedge
B
wheel and axle, lever
C
lever, pulley
D
wedge, wheel and axle
8) Which simple machine is most efficient for lifting objects high off the ground?
A
wedge
B
pulley
C
screw
D
lever
9) The amount of work done on an object is obtained by multiplying
A
force and distance
B
input force by output force
C
accelration and velocity
D
x and y
10) The rate at which work is done is called
A
power
B
joule
C
strength
D
mechanical advantage
*select an answer for all questions
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