Question

the speed of a vehicle of mass 500 kg increases it's speed from 50km/h to 72km/h calculate the increase in kinetic energy. ​

Answer 1

Answer:

The answer is giving below

Explanation:

ANSWER

Initial speed u=36 km/h=10 m/s

Final speed v=72 km/h=20 m/s

Now change in KE=

2

mv

2

−

2

mu

2

change in KE=

2

500×20

2

−

2

500×10

2

ΔKE=7.5×10

4

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