Test Academy | A ball of mass m moving with velocity V, makes a head on elastic collision with a ball of the same mass moving with velocity 2V towards it. Taking direction of V as positive velocities of the two balls after collision are – V and 2V, 2V and – V, V and – 2V,

Question

A ball of mass m moving with velocity V, makes a head on elastic collision with a ball of the same mass moving with velocity 2V towards it. Taking direction of V as positive velocities of the two balls after collision are

Options :

– V and 2V
2V and – V
V and – 2V
– 2V and V

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