Motion: What Is Speed?

The video explains deceleration as a decrease in velocity, using examples like a car stopping, a skier slowing down, and a soccer ball losing speed. It describes deceleration as negative acceleration and illustrates how it can be graphed with a downward line, contrasting it with acceleration, which is graphed with a rising line.

What common factor is shared by the car, skier, and soccer ball in the examples?

• They are all changing direction.

• They are all stationary.

• They are all losing speed.

• They are all accelerating.

How can deceleration be described in terms of acceleration?

• As positive acceleration.

• As constant acceleration.

• As zero acceleration.

• As negative acceleration.

What happens to acceleration when a snowboarder climbs uphill?

• It becomes zero.

• It decreases.

• It remains constant.

• It increases.

How is acceleration typically represented on a graph?

• As a zigzag line.

• As a rising line.

• As a downward line.

• As a flat line.

How is deceleration typically represented on a graph?

• As a flat line.

• As a rising line.

• As a downward line.

• As a zigzag line.