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1. The best way to describe the rate of motion of an object that changes speed several times is to
calculate the object's _____.
A average speed B constant speed C instantaneous speed D variable speed
2. Which of the following is a force?
A inertia B friction C velocity D acceleration
3. The unit for __ is m/s2.
A weight B acceleration C inertia D velocity
4. Which of the following is not used in calculating acceleration?
A average speed B. initial velocity
C time interval
D. final velocity
5. A body accelerates if it _____.
A speeds up B slows down C changes direction D all of these
6. The gravitational force between two objects depends on their _____.
A speed B masses C velocities D shapes
7. _____ acts only between surfaces that are in contact.
A Inertia B Friction C Gravity D A net force
8. In a head-on car crash, passengers not wearing seat belts continue to move forward with the same
___________ that the car had prior to impact.
A momentum B force C potential energy D speed
9. An object of large mass has _____ than an object of small mass.
A less inertia B more inertia C less weight D greater acceleration
10. A constant velocity means acceleration is _____.
A
positive
B negative C increasing D zero
11. Forces that are equal in size and opposite in direction are called _____.
A
newtons
B
balanced forces
C
net forces
D
friction
12. An astronaut on the moon would have the same _____ as on Earth.
A velocity B inertia C weight D acceleration
13. If a car's velocity changes from 0 m/s to 30 m/s 10 seconds later, its average acceleration is _____.
A
1 m/s2
B 3 m/s2 C 10 m/s2 D 20 m/s2
14. To skate 100m in 20s, a skater must skate at an average speed of _____.
A 2 m/s B 4 m/s C 5 m/s D 10 m/s
15. A bus is slowing down before it comes to a stop. Which of the following describes its acceleration?
A
very small
B zero C greater than the velocity D negative
16. An object's weight is directly related to its _______.
A
volume
B velocity C mass D shape
17. Motion can be described as a change in ________.
A
velocity
B acceleration C speed D position
18. Any change over time is called a(n) _______.
A
rate
B period C average D constant
19. Velocity describes both ______ and _______ of an object.
A
speed and force
B speed and direction C acceleration and speed
20.
A. Ball “A” will hit the ground first. B. Ball “B” will hit the ground first. C. Ball A. Will hit the
ground harder than ball “B”. D. Both balls will hit the ground at the same time.
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