Things in Motion: Acceleration

The video tutorial explains the concept of acceleration, starting with a car accelerating when the gas pedal is pressed. It describes positive acceleration using examples like a rocket and a bicycle going downhill. The tutorial also covers negative acceleration, or deceleration, with examples such as a skier slowing down and a car stopping at a stop sign. Acceleration is defined as a change in velocity, and deceleration is a decrease in velocity.

What happens to a car's speed when you press the gas pedal?

• The car's speed increases.

• The car's speed decreases.

• The car comes to a stop.

• The car's speed remains constant.

How can you visually observe a car's acceleration?

• By the sound of the engine.

• By the moving needle of the speedometer.

• By the color of the car.

• By the size of the car.

Which of the following is an example of positive acceleration?

• A rocket launching into space.

• A car stopping at a red light.

• A skier slowing down on a slope.

• A bicycle parked on a hill.

What term is used to describe a decrease in velocity?

• Negative acceleration

• Constant velocity

• Uniform motion

• Positive acceleration

Which scenario illustrates negative acceleration?

• A rocket increasing its speed.

• A skier turning to slow down.

• A car accelerating on a highway.

• A bicycle speeding up on a flat road.