Scientists define _____________ as the rate at which velocity changes.

A change in velocity can involve a change in either speed, direction or both.

• True

• False

In science, ____________ refers to increasing speed, decreasing speed, or changing direction.

Whenever an objects' speed increases, it

• accelerates

• stays the same

• decelerates

• changes

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Give an example of acceleration

Tags

NGSS.MS-PS2-2

The change in speed when something slows down is sometimes called _______________, or negative acceleration.

Give an example of deceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Even an object that is traveling at a constant speed can be accelerating

• False

• True

Recall that acceleration can be a change in speed as well as a change in _________.

Many objects continuously change direction without changing speed.

• True

• False