Question

Energy required to accelerate a car from 10m/s to 20m/s compared with that required to accelerate is from 0 to 10 is?

A)TWICE
B) THREE TIMES
C) FOUR TIMES
D) SAME

Answer 1

Answer:

B) THREE TIMES..

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Answer 2

Answer:

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Explanation:

Correct option is

B

3 times

Energy required to accelerate from 10m/s to 20m/s E1=21m(400−100)

Energy  required to accelerate from rest to 10m/s  E2=21m(100−0)

E2E1=21m(100)21m(300)=3times