APS Semester Test Study Guide

The best definition of energy is

• the ability to move

• the speed an object travels

• the ability to cause a change

• the vibrations of atoms

Atoms that have a positive charge will be attracted to atoms with a ___ charge.

• positive
• negative
• neutral

Acceleration occurs when an object’s ________________ changes in a certain time frame.

• distance
• velocity
• position
• speed

When an object speeds up, it has ____________________ acceleration.

• undetermined
• negative
• positive

The equation for speed is:

• distance x time
• distance/velocity
• time/distance
• distance/time

The formula for calculating acceleration is ____________________

• time / final velocity - initial velocity
• initial velocity - final velocity / time
• final velocity - initial velocity / time
• time / initial velocity - final velocity

An object traveling at a constant speed can still technically be accelerating if its ______________ is changing.

• position
• direction
• mood
• none of the above

When an object slows down, it has ____________________ acceleration.

• undetermined
• negative
• positive

Acceleration can be calculated by dividing the change in velocity by the ______________ in which the change occurred.

• time
• length
• speed
• momentum

A ball thrown at 30m/s N is an example of

• speed
• velocity
• acceleration
• all of the abaove