Physical Science Semester 1 Final 23-34, Version R

Any push or pull on an object defines _____.

• inertia
• acceleration
• force
• momentum

Which statement best explain exactly what a speed of 15 m/s means.

• A person travels 15 meters per second.
• A person travels 15 miles for every second they are traveling.
• A person travels 15 meters every second they are traveling.

A change in position, relative to a reference point defines

• motion
• speed
• velocity

Speed with direction defines

• velocity
• speed
• distance

____ is a measure of how fast something is moving without the direction of travel

• density
• speed
• velocity

According to Newton's 1st Law of Motion, under balanced forces, an object _____

• will accelerate
• will only change direction, not speed
• will not accelerate

Unbalanced forces cause

• acceleration
• motion
• movement
• inertia

Newton's ____ law of motion is also called the law of inertia.

• 1st
• 2nd
• 3rd
• universal gravitation

Gravity is a force that is a pull toward ____.

• the top half of an object
• an object's bottom half
• the center of the Earth, only
• any object's center of mass

The definition of acceleration is the rate of change in

• velocity
• displacement
• direction
• distance
• speed