Acceleration

_______ is the unit of acceleration.

• m/s

• m/s²

• m

• s

The change in speed at an instant of time is called ___

• Time

• Speed

• Velocity

• acceleration

Acceleration =

• (final velocity + initial velocity ) ÷ time

• (Final velocity - starting velocity)÷ time

• Time

• (final velocity + initial velocity ) x time

The slope of speed time graph gives _______

• Velocity

• Speed

• Acceleration

• Time

For an object with constant velocity acceleration is ______

• 1

• 20

• 10

• Zero

In a speed time graph time is taken along ______axis.

• x

• y

• z

• None of the above

In a speed time graph speed is taken along _____ axis.

• x

• y

• z

• None of the above

If starting velocity of an object is 20m/s and final velocity is 30m/s at a time of 5 seconds.Calculate acceleration

• 5m/s²

• 3m/s²

• 1m/s²

• 2m/s²

A race cars velocity increases from 4 m/s to 36 m/s over a

8 second time.What is its average acceleration?

• 1

• 2

• 3

• 4