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- 1. Multiple Choice
A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?
100 Newtons in the same direction
100 Newtons in the opposite direction
- 2. Multiple Choice
What is the sum of all forces acting on an object?
net force
motion
third law
collide
- 3. Multiple Choice
According to Newton's Third Law, if someone is riding a wakeboard and then jumps off, the wakeboard will travel in the opposite direction because...
the mass of the wakeboard is the same as the person jumping off
the pull of gravity on the person is sthe same as on the wakeboard
the air resistance on the person is great and the friction on the wakeboard is small
for the force that sent the person forward, there is an equal force pushing back on the wakeboard.
- 4. Multiple Choice
The nozzle of a toy rocket is pointed down so that as fuel is ignited, the exhaust pushes down. Why is this necessary?
The rocket is protected from the heat of the exhaust.
Burned fuel can be collected on the ground.
As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward.
This allows the rocket to be steered properly.
- 5. Multiple Choice
A ___ is the unit of measurement for force.
Interacting objects
Newton
Force; same
Friction
- 6. Multiple Choice
When you are sitting in a chair, your body exerts a ___ on the chair and the chair exerts the ___ force back.
Interacting objects
Newton
Force; same
Friction
- 7. Multiple Choice
When applying a force to a book on a desk, the force must be greater than the force of ___ in order for the book to move.
Interacting objects
Newton
Force; same
Friction
- 8. Multiple Choice
True or False? A rocket launched into space and a balloon accelerating upward are both examples of Newtons Third Law.
True
False
- 9. Multiple Choice
True or False? A train moving at a constant speed and a girl circling on a carousel are both examples of Newtons Third Law.
True
False
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