A car is moving at a speed of 18 km per hr and another car of same mass is moving at a
speed of 36 km per hr. Find ratio of their Kinetic Energy.
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Explanation:
Kinetic energy = 1/2 (mv²)
K.E.1 = 1/2 [m1(v1)²]
= 1/2 [400 (36)²]
= 259200 J
K.E.2 = 1/2 [m2(v2)²]
= 1/2 [600 (54)²]
= 874800 J
K.E.1/K.E.2= 259200/874800
= 8/27 J
Ratio = 8:27
HOPE IT HELPS..
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