Answer :

olumideolawoyin

Answer:

9600 Joules

Explanation:

Mass of the car = 1200kg.

Change in speed = final speed - initial speed

= 20 - 16

= 4m/s

Work done on the car to increase its speed = Change in its Kinetic energy

= 1/2 × mass × (change in speed)^2

= 1/2 × 1200 × 4^2

= 1/2 × 1200 × 16

= 600 × 16

= 9600 Joules

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