Download Laws of Motion Test Name

Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the
reaction force is
a. exerted on the table.
b. exerted on all the other billiard balls.
fc. not present.
d. exerted by the billiard ball on the cue ball.
____
2. A crumpled piece of paper hits the ground before a flat sheet of paper because
a. the acceleration of gravity is greater on the crumpled paper.
b. there is more air resistance against the flat paper.
c. the crumpled paper is more massive.
d. the crumpled paper is less massive.
____
3. According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force
will…
a. remain in motion.
c. change its momentum.
b. eventually come to a stop.
d. accelerate.
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4. An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from
each other with different accelerations. This is an example best described by
a. Newton’s first law of motion for objects at rest.
b. Newton’s first law of motion for objects in motion.
c. Newton’s second law of motion.
d. Newton’s third law of motion.
____
5. A sled sliding on a flat, icy surface with a constant velocity is best described by
a. Newton’s first law of motion for objects at rest.
b. Newton’s first law of motion for objects in motion.
c. Newton’s second law of motion.
d. Newton’s third law of motion.
____
6. Which of the following explains the difference between speed and velocity?
a. One has motion, and the other does not.
b. One has direction, and the other does not.
c. One involves time, and the other does not.
d. One involves acceleration, and the other does not.
____
7. Dividing the total distance traveled by the total time is how to calculate
a. average speed.
c. average acceleration.
b. average velocity.
d. average motion.
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8. A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the
hiker has a negative acceleration?
a. His direction changed.
c. His speed increased.
b. His direction was unchanged.
d. His speed decreased.
_____ 9. How does Newton’s third law explain how a rocket takes off?
a. The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the
same. The motion is therefore both “equal and opposite”
b. The rocket is at rest until ignition.
c. The hot gasses move in one direction, while the rocket moves in the opposite direction but with
equal force.
d. The hot gasses cause global warming.
_____10. Objects with more mass (kg) have more what?
a. Gravitational pull
b. Size
c. Velocity
d. All objects have the same gravitational pull no matter what mass!
11.
12. Look at the Figure A above. Why does the block not move?
a. no force applied
b. frictional force
c. surface friction
d. kinetic friction
13. If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a
mass of 0.78 kg, which ball will have the greater acceleration? (F=ma)
a. The one with a mass of .78 kg will have the greatest acceleration.
b. The one with a mass of .52 kg will have the greatest acceleration.
c. They will both accelerate at the same rate.
d. Neither will accelerate.
Use the picture below to answer questions number 14 and 15:
F = ma
14. If one shopping cart has a mass of 20 kg, what is the force needed in order to accelerate 5
shopping carts 10 m/s2?
15. If one shopping cart has a mass of 20 kg, what is the force needed in order to accelerate the
cart 20 m/s2 if you add 60 kg worth of groceries?
16. Two of Ms. Goel’s students would like to
design safer automobiles when they grow up.
Which subject is least important for an automobile
designer to study?
a. Forces and motion
b. Human health and Biology
c. Properties of rocks and minerals
d. Properties of metals and plastics
17.