# newtons third law

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1. A soccer player kicks a ball with 1500 N of force. The ball exerts a reaction force against the player's foot of?

A. somewhat less than 1500 N
B. somewhat more than 1500 N
C. 1500 N
d. none of the above
C. 1500 N
(this multiple choice question has been scrambled)
2. What is newton's third law?
to every action there is always an opposed equal reaction
3. When you step off a curb, Earth pulls you downward. The reaction to this force is?
A. a slight air resistance
B. you pulling Earth upward
C. nonexistent in this case
D. none of these above
B. you pulling Earth upward
(this multiple choice question has been scrambled)
4. When you step off a curb, Earth pulls you downward and you pull the force upward. why do you not sense Earth moving upward toward you?
A. Earth is fixed, so it cannot move
B. it moves, but a very small amount that you can see
C. Earth can move, but other objects on it prevent it from moving
D. none of the above
B. it moves, but a very small amount that you can see
(this multiple choice question has been scrambled)
5. the same force exerted on a small mass produces a ____ acceleration.
large
6. the same force exerted on a large mass produces a ___ acceleration.
small
7. When a cannon is fired, the accelerations of the cannon and the cannonball are different because the
A. ratios of force to the mass are the same
B. masses are different
C. forces dont occur at the same time
D. forces, although theoretically the same, in practice are not
B. masses are different
(this multiple choice question has been scrambled)
8. Consider a high speed bus colliding head on with an innocent bug. The force of impact splatters the unfortunate bug over the windshield. Which is greater, the force on the bug or the force on the bus?
A. bug
B. bus
C. both are the same
D. cannot say
C. both are the same
(this multiple choice question has been scrambled)
9. Two people of equal mass on slippery ice push off from each other. Will both move at the same speed in opposite directions?
A. no
B. yes
C. yes, but only if both push equally
D. no, unless acceleration occurs
B. yes
(this multiple choice question has been scrambled)
10. you run horizontally at 4 m/s in a vertically falling rain that falls at 4 m/s. relative to you, the raindrops are falling at an angle of?
A. 0o
B. 45o
C. 53o
D. 90o
B. 45
11. A force is a push or pull that is required to change the
A. the state of motion of an object
B. temperature of an object
C. composition of an object
D. color of an object
A. state of motion of an object
(this multiple choice question has been scrambled)
12. a force interaction requires at least
A. an action force
B. one force
C. two forces
D. a reaction force
C. two forces
(this multiple choice question has been scrambled)
13. Whenever one object exerts a force on a second object, the second object exerts a force on the first one
A. is opposite in direction
B. is equal in magnitude
C. occurs at the same time
D. all the above
D. all the above
14. the force that propels a heavy truck along a highway is provided by
A. gravity
B. newtons laws of motion
C. the air drag acting on the truck
D. the highway pushing back on the wheels of the truck
D.
(this multiple choice question has been scrambled)
15. Earth pulls on the moon with a certain force. relative to this force, the pull of the moon on earth is
A. a little greater
B. a little less
C. the same
D. much less
C.
(this multiple choice question has been scrambled)
16. a boulder falls due to gravity. the reaction to the force on the boulder is
A. air resistance
B. the boulder pulling up on Earth
C. all of these
D. the boulder being pulled downward by Earth
B.
(this multiple choice question has been scrambled)
17. if action is a foot kicking a soccer ball, the reaction is an equal force on the
A. air drag of motion
B. ground
C. ball
D. foot
D.
(this multiple choice question has been scrambled)
18. The net force on a kicked soccer ball can be zero when
A. action and reaction both act on the ball
B. it is kicked by two feet with equal and opposite amounts of force
C. it is kicked in the same direction by two feet
D. it is kicked by two feet at right angles to each other
B
19. the amount of force with which a boxers punch lands depends on the
A. physical condition of the boxer
B. mass of whats being hit
C. boxers attitude
D. none of these
B
 Author: trisha ID: 235624 Card Set: newtons third law Updated: 2013-09-18 19:52:14 Tags: newtons Folders: Description: chapter 5 newtons third law Show Answers: