A cyclist double his speed. How will his kinetic energy change : Increase,decrease or remain same. Give reason
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Answered by
64
Increase because kinetic energy means In motion
Answered by
68
let 1/2 mv² = K
When we increase speed to 2v
1/2 x m x 2v x 2 v
2mv² = 1/2 mv² + 1/2mv² = k + k = 2k
So the kinetic energy got increased (doubled)
When we increase speed to 2v
1/2 x m x 2v x 2 v
2mv² = 1/2 mv² + 1/2mv² = k + k = 2k
So the kinetic energy got increased (doubled)
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