Forces & Motion Quiz

If the forces on an object are balanced then there is ______________________ on the object.

• No acceleration

• No force acting

What unit is used to measure force?

• net force

• kilograms

• Newtons

• velocity

According to Newton's first law, an object in motion will stay in motion unless:

• An opposing force acts on it

• It's in outer space

• It remains at rest

• It stops

What might happen if you were in a braking car, and you weren't wearing your seat belt?

• You'd be pressed backward in your seat

• You'd fly forward through the windshield

• You'd fly backward through the rear window

• You'd move sideways through the passenger door

What causes a ball rolling across a rug to slow to a stop?

• The rug doesn't have enough momentum to keep the ball rolling

• The rug doesn't have enough force to hold the ball

• Friction resists the ball's forward motion

• The ball isn't moving fast enough

If an unbalanced force acts on an object, what will happen?

• It will accelerate in the opposite direction of the force

• It will accelerate at an angle of 90 degrees to the force

• It will not move at all

• It will accelerate in the same direction as the force

According to Newton's third law, what happens when you push against a wall?

• The wall does not resist at all

• The wall pushes back at you twice as hard as you push against it

• The wall pushes back at you half as hard as you push against it

• The wall pushes back at you with the same amount of force

What is friction?

• The force of gravity

• A tense situation

• The force that resists the motion between 2 objects

• The normal force

It would take more force to stop an object with higher mass than it would to stop an object with lower mass.

• True

• False