Force and Motion Review

What unit do we use to measure force?

• m/s

• m/s north

• Newtons

• cm

A quarterback throwing the football to a wide receiver is an example of:

• kinetic energy

• potential energy

• super energy

• not enough information

Tags

NGSS.MS-PS3-1

What is Newton's Third Law of Motion?

• an object at rest stays at rest, and an object in motion will stay in motion until an outside force acts upon it

• the acceleration of an object will be equal to the net force of an object divided by its mass

• for every action, there will be an equal and opposite reaction

• an object that is not moving will stay not moving moving until an unbalanced force acts on it

Tags

NGSS.MS-PS2-1

What is the net force?

• 5.5 N left

• 5.5 N right

• 2.5 N left

• 2.5 N right

Tags

NGSS.MS-PS2-2

What is the net force?

• 65 N left

• 65 N right

• 35 N left

• 35 N right

Tags

NGSS.MS-PS2-2

When the person pushes the ground with their foot, the equal and opposite reaction force is

• the ground pushing back on their foot

• when they start to move forward

The best reference points are stationary (not moving).

• true

• false

Select the best reference point: You see the car move past the stop sign.

• The car

• The stop sign

If a bird hit your windshield on your car, the force of the car on the bird equals

• the force of the bird on your car.

• the force of the car on the brid

• an elastic collision on the windshield

• a noncontact force acting on the windshield

Tags

NGSS.MS-PS2-1

If you throw a ball into the air, Earth exerts a force on the ball. The ball in the air exerts no force on Earth.

• True; all forces act alone

• False; there will always be a force pair

Tags

NGSS.MS-PS2-5