Newton's Laws of Motion Review

One object has twice as much mass as another object. The first object also has also twice as much...

• velocity
• gravitational acceleration
• inertia
• all of these

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NGSS.HS-PS2-1

When a heavy football player and a light one run into each other, who exerts more force?

• The heavy one
• The light one
• They are equal
• there is no such thing as force

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NGSS.MS-PS2-2

NGSS.MS-PS2-1

If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired
• the same amount of force with which it was fired
• 1/2 the force with which it was fired
• zero, since no force is requires to keep it moving. 

Tags

NGSS.MS-PS2-2

A(n) __________ is a push or pull.

• newton
• acceleration
• force
• momentum

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NGSS.MS-PS2-2

Which best explains why we are able to accelerate forward when starting to run?

• As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
• No acceleration takes place. Runners are always at a fixed velocity.
• The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
• The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward

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NGSS.MS-PS2-1

When a large truck pushes a small car with a given force, the small car is applying an equal and opposite force on the truck.

• True
• False

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NGSS.MS-PS2-1

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

According to Newton’s Law of Inertia, which of the following objects will change its motion?

• A bike rider on a smooth and level road, pedaling at a constant rate.
• A train pulling on another train, each with the same amount of force.
• A chair sitting on the floor with balanced forces acting in opposite directions.
• A ball rolling across the floor with friction acting in the opposite direction.

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NGSS.MS-PS2-2

A bowling ball is rolled with a certain speed and strikes a bowling pin with a force indicated by the arrow in this illustration. When the bowling ball strikes the bowling pin, the force applied by the pin to the ball -

• depends on the mass of the bowling pin.
• is equal to the force applied by the ball.
• must be zero, since the pin is not moving.
• is equal to the force of gravity on both.

Tags

NGSS.MS-PS2-1

According to Newton's Second Law, How do you calculate force?

• Multiply mass and acceleration

• Divide mass by acceleration

• Divide acceleration by mass

• Divide force by mass

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NGSS.MS-PS2-2