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Forces, Motion, And Energy Review
Test Description: The following questions will help prepare you for your post assessment on forces and motion.
Instructions: Answer all questions to get your test result.
1) A cup is sitting on a table. Which statement describes the relationship between the cup and the table.
A
The forces on the cup are unbalanced.
B
The cup is accelerating faster than the table
C
The cup is pushing on the table
D
The cup is doing work on the table
2) Which statement best compares a parked car with a car moving along a straight line at a constant speed?
A
Both cars are being subjected to balanced forces
B
Only the moving car is being subjected to forces
C
There are no forces acting on either car
D
Only the parked car is being subjected to balanced forces
3) Which is an example of balanced forces?
A
A basketball being held
B
A book falling off a table
C
A door starting to open
D
a truck beginning to accelerate
4) Two forces act in opposite directions on a wood block. What will happen if the forces are unbalanced?
A
The mass of the block will change
B
The forces will reverse direction
C
The position of the block will change
D
The block will balance the forces
5) Two people are pushing a car. One person is pushing with a force of 450 N and the other person is pushing with a force of 300 N. What information is needed to determine the net force applied to the car by the people?
A
The direction of the road
B
The weight of the 2 people
C
The weight of the automobile
D
The direction of the forces
6) While on a movie set, a stuntman jumps off the roof of a building. As he falls towards an airbag, what is increasing?
A
gravity
B
kinetic energy
C
wind velocity
D
potential energy
7) What is the difference between potential energy and kinetic energy?
A
Potential energy is energy of an object due to applied force. kinetic energy is energy stored after force is applied.
B
Potential energy is the energy of an object due to its position, while kinetic energy is due to its motion
C
Potential energy is the energy of an object due to its motion, while kinetic energy is energy due to its position
D
Potential energy is energy stored after applied force. Kinetic energy is energy used from the applied force.
8) Riding a bicycle produces several forms of energy. Which form of energy is produced in the greatest amount by pedaling a bicycle down the sidewalk?
A
chemical
B
sound
C
kinetic
D
radiant
9) A student pushed a rock from the top of a hill. What type of energy change occurred after the rock was pushed?
A
Kinetic energy was converted to electrical energy
B
Heat energy was converted to potential energy
C
Electrical energy was converted to heat energy
D
Potential energy was converted to kinetic energy
10) What kind of energy change occurs when a battery is operating a remote control toy?
A
Light energy is changed to heat energy
B
Heat energy is changed to light energy
C
kinetic energy is changed to chemical energy
D
Potential energy is changed to kinetic energy
11) Thomas watches an orange fall from a tree to the ground. Which best describes the flow of energy as the oranges falls to the ground?
A
potential energy-- kinetic energy-- sound energy
B
potential energy-- sound energy-- heat energy
C
solar energy-- potential energy-- heat energy
D
kinetic energy-- potential energy--sound energy
12) The sound made by crickets occurs when the male crickets rub its two hind legs together. Which type of energy transformation results in the sound made by crickets?
A
mechanical energy to sound energy
B
sound energy to thermal energy
C
mechanical energy to chemical energy
D
thermal energy to chemical energy
13) Which of the following is used as a wedge?
A
a baseball bat
B
a faucet handle
C
a bicycle pedal
D
a sewing pedal
14) How does a pulley help make work easier?
A
It reduces friction
B
It redirects force
C
It holds things together
D
It pushes materials apart
15) A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp....
A
reduces the amount of force applied to the box.
B
increases the amount of friction on the box
C
increases the weight of the box
D
reduces the gravitational force on the box
16) Which simple machine uses a fulcrum to redirect a force?
A
wedge
B
inclined plane
C
pulley
D
lever
17) A wheelbarrow is classified as a second-class lever. If a 500 N bag of soil is added to the wheelbarrow, which statement best describes the effort force?
A
The effort is less than the load
B
The effort decreases mechanical advantage
C
The effort is greater than the load
D
The effort equals the load
*select an answer for all questions
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