Rectilinear Motion

When a moving object changes its velocity, it may be through acceleration or deceleration.

• true

• false

A negative displacement means the object is moving in a direction opposite to its original direction.

• true

• false

An object's motion or position is always relative to another object.

• false

• true

Answer explanation

Velocity is not relative; it' calculated.

Body that helps describe the position or movement of an object in relation to its own position.

• frame of reference

• inertia

• motion

Path describing the movement of a body.

• trajectory

• displacement

• motion

Change in the position of a body.

• displacement

• trajectory

• inertia

The distance traveled by an object and the direction in which it moves.

• trajectory

• displacement

• frame of reference

Resistance from a body to changing its position or motion.

• inertia

• displacement

• trajectory

How do you calculate velocity?

• distance divided by time

• time divided by distance

• distance multiplied by time

A car travels 120 miles in 12 hours. What is the car's speed?

• 10 MPH

• 10 m/s

• 240 MPH

• 240 m/s