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- 1. Multiple Choice
Newton's third law of motion describes equal and opposite forces:
between two objects
acting on a single object
acting only when objects are in contact
between solid objects but not liquids or gases
- 2. Multiple Choice
If you lean against a brick wall, the wall:
pushes back with an equal force
pushes back with a smaller force
pushes back with a greater force
does not push back
- 3. Multiple Choice
Which law is this: Every force has an equal and opposite reaction force.
Newtons First Law
Newtons Second Law
Newtons Third Law
- 4. Multiple Choice
Newtons third law states that for every action, there is an_________ reaction
unequal and opposite
stronger and opposite
equal and similar
equal and opposite
- 5. Multiple Choice
Force always come in________
waves
triplets
pairs
- 6. Multiple Choice
When a heavy football player and a light one run into each other, who exerts more force
The light one
Their force are equal
The heavy one
- 7. Multiple Choice
The forces in a force pair are in _______ direction
opposite
same
- 8. Multiple Choice
When a small car pushes a big truck, the truck applies an equal and opposite force on the car.
False
True
- 9. Multiple Choice
How is this an example of Newton's Third law
Only the ball is using the head
only the head is pulling the ball
They are both exerting an equal force on each other
- 10. Multiple ChoiceAn archer shoots an arrow. The action force is the bowstring against the arrow, the reaction force is...Air resistance against the bowthe arrow's push against the bowstringthe grip of the archer's hand on the bow
- 11. Multiple ChoiceA baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...Less than 1, 000 N1,000 NMore than 1,000 N
- 12. Multiple ChoiceA rocket pushes exhaust 10, 000 N. Without any other forces acting on the rocket, how much force does the rocket go forward?15,000 N1,000 N10, 000 N
- 13. Multiple Choice
Newton's Third Law is also known as...
The Law of Inertia
The Law of Acceleration
The Law of Conservation of Momentum (Force Pairs)
- 14. Multiple ChoiceWhat is the reaction force to a foot pushing down on the floor?The foot going through the floorThe floor pushing back against the footThe floor breaking to the foot
- 15. Multiple Choice
The Moon's gravitational pull on the Earth is ____________ the Earth's gravitational pull on the Moon.
Equal to
Less than
Greater than
- 16. Multiple Choice
A fly hits the windscreen of a moving car. In this collision, how did the size of the force on the fly compare to the size of the force on the car?
The force that the car applied to the fly was ____________ the force that the fly applied to the car.
Equal to
Less than
Greater than
- 17. Multiple Choice
Giant magnets can be used to lift cars.
The force that the magnet applies to the car is ____________ the force that the car applies to the magnet.
Equal to
Less than
Greater than
- 18. Multiple Choice
Which is Newton's first law of motion?
Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that by forces impressed on it.
Force is equal to change in momentum (mV) per change in time. For a constant mass, force = mass x acceleration
For every action, there is an equal and opposite re-action
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