A body of mass m moving with velocity 3km/hr collides with a body of mass 2m at rest.Now find the velocity of coalesced mass.

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Solution

Dear Student ,
Here in this question from the conservation of momentum ,
Initial Momentum = Final momentum
$(m \times 3) + (2 m \times 0) = (m + 2 m) \times V [V = v e l o c i t y o f t h e c o a l e s c e d m a s s a f t e r c o l l i s i o n] \Rightarrow 3 m = 3 m V \Rightarrow V = 1 K m / h r$
Regards

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A body of mass m moving with velocity 3km/hr collides with a body of mass 2m at rest.Now find the velocity of coalesced mass.

Dear Student , Here in this question from the conservation of momentum , Initial Momentum = Final momentum m×3+2m×0=m+2m×V V = velocity of the coalesced mass after collision⇒3m =3mV⇒V=1 Km/hr Regards