force and motion test review 8th grade

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

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

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-PS2-2

2 balls collide and bounce off of each other. During the collision total momentum remained constant and total kinetic energy remained constant. What type of collision is this?

• Inelastic Collision

• Elastic Collision

• Perfectly Inelastic Collision

• No collision occurred

Tags

NGSS.HS-PS2-2

A squirrel has a weight of 4.9 N. What is his Mass if he is running on the Ground?

• 4.9 kg

• 9.8 N/kg

• 0.5 kg

• 5.0 kg

______ is the gravitational force exerted on an object

• Mass

• Gravity

• Force

• Weight

What are the units for Weight?

• Kg

• N

• N/kg

• Joules

Tags

NGSS.MS-PS2-4

What is a force?

• the PUSH or PULL on an object 
• The MOTION an object creates
• The objects HITTING one another
• Going REALLY FAST

Tags

NGSS.3-PS2-1