Linear Momentum - Practice Questions & MCQ

An object is thrown vertically upwards. At its maximum height, which of the following quantities becomes zero?
 

A man of 60 kg is running on the road and suddenly jumps into a stationary trolly car of mass 120 kg . Then, the trolly car starts moving with velocity $2 \mathrm{~ms}^{-1}$. The velocity of the running man was _______ $\qquad$ $\mathrm{ms}^{-1}$, when he jumps into the car.

A nucleus disintegrates into two nuclear parts which have velocities in the ratio of 9:3. The ratio of their nuclear size will be 

A ball of mass 'm' moves with speed 'v' and it strikes normally with a wall and reflects back normally with the same speed, if its time of contact with the wall is 't' then find the force exerted by the ball on the wall:

If I, a and t are the moment of inertia, angular acceleration and torque respectively of a body rotating about any axis with angular velocity w, then