Q.

A metal ball of mass 2 kg moving with speed of 36 km/h has a collision with a stationary ball of mass 3 kg. If after collision, both the balls move together, the loss in kinetic energy due to collisions is

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a

80 J

b

40 J

c

60 J

d

160 J

answer is C.

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Detailed Solution

ΔU=12m1m2m1+m2(u1−u2)2
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A metal ball of mass 2 kg moving with speed of 36 km/h has a collision with a stationary ball of mass 3 kg. If after collision, both the balls move together, the loss in kinetic energy due to collisions is