| 11. |
Compared to a 200. g
baseball, the inertia of a 1.00 kg basketball is Answer
|
|
A. |
1/200 th as great |
C. |
the same |
|
B. |
one-half as great |
D. |
5 times as great |
|
|
|
|
|
| 12. |
A 1.00 x 103
N force is required to move a 200. kg motorcycle at a constant
velocity. How much power must the motor generate to move the
motorcycle 0.500 km in 25.0 seconds. Answer
|
|
A. |
20.0 W |
C. |
2.00 x 104 W |
|
B. |
4.00 x 103 W |
D. |
4.00 x 106 W |
|
|
|
|
|
| 13. |
What is the
direction of the force of gravity on the red box?
Answer
|
 |
|
|
|
|
|
| 14. |
What is the
direction of the force due to friction on the box?
Answer
|
|
|
|
|
|
|
| 15. |
 What
is the force in the forward direction on the lawn mower
due to the man pushing on the handle? Answer
A. 321 N
B. 383 N
C. 420. N
D. 500. N |
|
|
|
|
|
| 16. |
|
|
Which of the following graphs
represents a falling object dropped from the top of a
building? Answer
|
 |
|
|
|
|
|
|
| 17. |
|
| The velocity of the bottle rocket is
due to
A. gravitational attraction.
B. friction of air molecules to air molecules.
C. action-reaction
D. centripetal force
Answer |
 |
|
|
|
|
|
|
| 18. |
| What is the acceleration of the box to
the right assuming a frictionless surface?
Answer
|
 |
|
|
|
|
|
|
|
A. |
2.0 m/s2 to the right |
C. |
20. m/s2 to the right |
|
B. |
0.80 m/s2 to the
right |
D. |
1.20 m/s2 to the left |
|
|
|
|
|
| 19. |
If the kinetic
energy of an object is doubled, which of the following must increase by
1.4 for the object? Answer
|
|
A. |
speed |
C. |
mass |
|
B. |
acceleration |
D. |
gravitational potential energy |
|
|
|
|
|
| 20. |
How long will it
take a 3.00 x 103 kilowatt motor on a elevator to lift an
elevator a distance of
40.0 m with three passengers if the combined mass of the passengers and
elevator is
1.00 megagrams? Answer
|
|
A. |
0.131 seconds |
C. |
13.3 seconds |
|
B. |
7.63 seconds |
D. |
131 seconds |
