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

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

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

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

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

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.

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.

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