a truck A moving with a velocity of 30m/s collides with a
stationary trolley B of mass 0.5tonnes after collision the
two bodies were automatically connected.find their common
velocities after collision if the mass of truck is 1.2tonne.

Answer Posted / vinayaka

The mass of the Truck is 1.2 tonnes
Velocity of truck is 30m/s
Mass of the trolley is 0.5 tonnes
Velocity of trolley is 0 m/s


Momentum before collison = Momentum after collison
so
1.2*30 + 0.5*0 = 1.7*x

x = 36.0/1.7
so commom velocity = x= 21.176470588235293 m/s

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