What change should be affected to the velocity of a body to maintain same kinetic energy if it's mass is increased four times ?
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Decreases to half what it was
Example :
Ek = 40
m= 20
v= 2
From the Q
m = 20×4 =80
v² = Ek/(1/2 m)
v² = 40/ (1/2 * 80)
v² = 40 / 40
v² = 1 => v= 1
v was 2 and became 1
Example :
Ek = 40
m= 20
v= 2
From the Q
m = 20×4 =80
v² = Ek/(1/2 m)
v² = 40/ (1/2 * 80)
v² = 40 / 40
v² = 1 => v= 1
v was 2 and became 1
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