Force and Motion

An object's change in position relative to a reference point is called

• enertia.

• motion.

• speed.

The distance traveled divided by the time in which the motion occurred is called

• speed.

• motion.

• velocity.

Mark drives to his friends house 200 miles in 4 hours. What is Mark's speed?

• 800 mph

• 20 mph

• 50 mph

The speed of an object in a particular direction is called

• motion.

• inertia.

• velocity.

Acceleration is the rate at which velocity changes.

• True

• False

A push, pull or twist is the definition for

• motion.

• friction.

• force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The S.I. unit for force is the

• pound.

• newton.

• km.

Combining all forces acting on an object is called

• acceleration.

• inertia.

• net force.

If Bob pushes a box north with 40 N of force and Bill helps by pulling the box north with 20 N of force, what is the net force acting on the box?

• 20 N

• 60 N

Tags

NGSS.MS-PS2-2

If forces are in the same direction you add all forces together and if they are in opposite directions you will subtract the smaller force from the larger force.

• True

• False

Tags

NGSS.MS-PS2-2