Physical Science Motion and Force Study Guide

The distance traveled by an object divided by the time it takes to travel that distance is called ____________.

• Average Velocity
• Average Speed
• Average Acceleration
• Activity

What is the speed of an object at rest?

• 15 km/h
• 0 km/h
• 1 km/h
• This cannot be determined without further information

The difference between speed and velocity is that velocity includes

• direction
• distance
• time
• weight

If you divide momentum by velocity, the result is the value of the object's ____________

• mass
• direction
• energy
• speed

A 10.0 kg dog chasing a rabbit north at 6.0 m/s has a momentum of _____________

• 0.6 kg * m/s
• 60.0 kg * m/s north
• 60.0 m/s
• 60.0 kg/s

Acceleration is defined as the change in velocity divided by

• speed
• final velocity
• time
• distance

When the velocity of an object changes, it is acted upon by a(n) _____________

• force
• inertia
• momentum
• deceleration

If the net force on an object is zero, the the object has _______________

• reaction forces
• action forces
• balanced forces
• unbalanced forces

Friction is defined as ________________

• force that opposes motion between two surfaces that are touching
• rate at which velocity changes
• resistance of an object to a change in its velocity
• speed of an object in a particular direction

When objects are moved further apart from each other, the force of gravity ______________

• increases
• stays the same
• decreases
• decreases at first and then increases