Laws of Motion ...

A metallic ball strikes a wall and falls down whereas a tennis ball having the same mass and velocity bounces back. The conclusion from this is that :

Impulse is

Choose the wrong statement:

Every action has reaction. These action-reaction are 

A body of mass M collides with a wall with velocity V and rebounds with the same speed. Its change in momentum is equal to :

When a body is in translatory equilibrium 

A ball of mass $$\dfrac{1}{10}$$ kg is thrown against a wall. It strikes the wall normally with a velocity of $$\displaystyle 30{ ms }^{ -1 }$$ and rebounds from there with a velocity $$\displaystyle 20{ ms }^{ -1 }$$. The impulse of the force exerted by the ball on the wall is 

A long-jumper runs before jumping to 

A cannon after firing recoils due to 

Choose the wrong statement