Motion & Forces

Instantaneous speed is total distance traveled divided by total time of travel.

• True

• False

Velocity describes both speed and acceleration.

• True

• False

A force is a push or pull that one body exerts on another body.

• True

• False

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An object accelerates if it speeds up, slows down, or changes directions.

• True

• False

An object is in motion only if its distance from a reference point is stationary.

• True

• False

If Kim won a 300 meter race in 40 seconds, her average speed was _____.

• 15 m/s

• 25 m/s

• 7.5 m/s

• 8.5 m/s

Tags

NGSS.MS-PS3-1

_____ is the rate of change of speed and/or direction.

• Acceleration

• Gravity

• Net force

• Inertia

Forces that are equal in size and opposite in direction are _____.

• Net forces

• Frictional forces

• Balanced forces

• Gravitational forces

Newton's First Law of Motion states that an object at rest stays at rest unless a _____ acts on it.

• Balanced force

• Net force

• Weak force

• Strong force

Which object has the greatest inertia?

• Bowling ball

• Ping-pong ball

• Toothpick

• Pencil

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2