Newton's Law Test Review

A sports car and a minivan run out of gas and are pushed to the side of the road. Which is easier to push, and why?

• sports car, because it has more mass and therefore more inertia

• the minivan because it has less mass and therefore less inertia

• sports car because it has less mass and therefore less interia

• minivan because it has more mass and therefore more inertia

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According to Newton's 1st Law of motion, what will an object in motion do when no external force acts on it?

• speed up

• move at the same velocity

• come to a stop

• change direction

Newton's 3rd law say that for every action there is a ________ and opposite reaction.

• maximum

• greater

• equal

• lesser

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The normal force the _____ force exerted by a surface on another object.

• Perpendicular contant

• parallel contact

• perpendicular field

• parallel field

The acceleration due to gravity on Earth is 9.8 m/s2. What is the weight of a 75 kg person on Earth?

• 9.8N

• 75N

• 85N

• 735N

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A car manufacturer wants to change its car's design to increase the car's acceleration. Which changes should the engineers consider making to the design?

• decrease the mass

• increase the top velocity the car can travel

• increase the mass

• decrease the force that the engine provides

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What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44N?

• 0.22 m/s2

• 2.0 m/s2

• 440 m/s2

• 4.4 m/s2

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Which describes what happens to the bone?

• It begins to move to the left w/a net force of -2N

• It begins to move to the right with a net force of 10N.

• It begins to move toward the right with a net force of 2N.

• It begins to move toward the left with a net Force of -4N.

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A skateboarder is trying a new stunt. He stands on his skateboard which is at rest on top of a large box. He stands still and his friend pulls a rope attached to the box. What will happen to the skateboard?

• roll forward but stay on the box as the friend pulls it away

• it will roll forward away from the box

• it will roll backwards as the friend pulls the box out

• it will stay in place and the skateboarder will touch the ground close to where he was to start.

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A rocket experiences a constant force even as the amount of fuel in its fuel tanks decreases. What happens to the acceleration of the rocket as it runs out of fuel?

• The acceleration decreases because the mass decreases.

• The acceleration increases because the mass decreases.

• the acceleration increases because the mass increases

• the acceleration decreases because the mass increases

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