Understanding Speed, Velocity, and Acceleration

What is the SI unit for speed?

• Miles per hour

• Meters per second

• Feet per second

• Kilometers per hour

How is velocity different from speed?

• Velocity is a scalar quantity, while speed is a vector quantity.

• Velocity is measured in meters per second squared, while speed is in meters per second.

• Velocity is always greater than speed.

• Velocity considers direction, while speed does not.

What happens to a car's displacement when it returns to the starting point in a race?

• It becomes equal to the total distance traveled.

• It becomes zero.

• It doubles.

• It becomes negative.

What term is used to describe a decrease in velocity?

• Uniform motion

• Deceleration

• Constant speed

• Acceleration

If a car's velocity changes by different amounts each second, what type of acceleration is it experiencing?

• Uniform acceleration

• Non-uniform acceleration

• Zero acceleration

• Constant acceleration