SCIENCE 7

A measure of how far something moves in a given amount of time.

• velocity

• position

• reference point

• speed

What information is needed to determine the velocity of an object

• distance and time

• distance only

• distance, time and direction

• direction only

An object that has centripetal acceleration is in what motion?

• diagonal

• linear

• backward

• circular

Which of the following objects accelerate?

• A car moving at the same speed.

• Athlete running straight.

• A motorcycle that turned left.

• Ball rolling at 2 m/s.

Velocity is considered as a vector quantity because

• it shows speed

• it shows direction

• it shows distance

• it shows time

The horse is galloping at 15 m/s. Five seconds later, after climbing the hill, the horse is moving at 6.5 m/s. Find the acceleration.

• 4.3 m/s²

• -1.7 m/s²

• - 4.3 m/s²

• 1.7 m/s²

Acceleration is a change in

• velocity

• speed

• distance

• time

It is a location to which you compare other locations.

• position

• direction

• motion

• reference point

How is average speed calculated?

• Get the difference of final and initial velocity divided by time.

• Get the difference of distance traveled divided by time.

• Total distance divided by total time

• Total time divided by total distance

Which of the following is a unit of speed?

• m/s²

• kg/m

• km/s²

• m/s