Speed Review

Multiple Choice

The unit for speed is:

• m/s

• s

• m

• km

How to Calculate Speed

 Speed = distance divided by time

Multiple Choice

What distance will a balloon fly if it soars at a speed of 12.3 m/s for a time of 8 s?

• 1.5 m/s

• 98.4 m/s

• 98.4 m

• 1.5 m

Multiple Choice

A car travels 66 km in 2 hours. What is the car’s average speed?

• 33km

• 33km/hr

• 33hr

• 33mph

Draw

What would a distance - time graph look like if the object is at rest?

Multiple Choice

In which graph are both runners moving at the same speed?

• graph A

• graph B

• graph C

• graph D

Multiple Choice

In the graph shown below which of the following is true?

• Both runners travel the same speed

• Both runners are moving for the same amount of time

• The runners are moving in opposite directions

• The runners are cover different distances

Multiple Choice

What was the ball's average speed during the time represented in the graph?

• 0.2 m/s

• 0.5 m/s

• 5.0 m/s

• 10.0 m/s

Multiple Choice

The speed of the green line at 1 second is 20 m/s.

The speed of the green line at 3 seconds is 20/s.

Why is the speed the same at these two points?

• This is just a coincidence.

• Steep Lines = Constant Speed

• Straight Lines = Constant Speed

• Curvy Lines = Constant Speed

Multiple Choice

How many times is this object at rest?

• 0

• 1

• 2

• 3

Multiple Choice

• An object moves with constant velocity and the speeds up

• An object slows down, stops, and then moves at a constant velocity

• An object slows down, stops turns around, and then speeds up

• An object slows down, stops, and then speeds up without turning around