Question

the ratio of energy required to accelerate a car from rest to 20m/s to the energy needed to accelerate from 20m/'s to 40m/'s is
1) 1:1
2)1:3
3)1:2
4)1:4​

Answer 1

Answer:

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answer is 1:1

Explanation:

first step is done with acceleration formula

with taking time as "t"

Answer 2

Answer:

Explanation:

i think its 1:3

since energy is asked not acceleration