Forces and Laws...

The force needed to produce an acceleration of $$6 m/s^2$$ in a ball of mass $$ 4 kg$$ will be

When will a body under the action of several forces have 0 acceleration? 

Every action has reaction. These action-reaction are 

A body is said to be underbalanced forces when the resultant force acting on the body is 

A driver accelerates his car first at the rate of 1.8 m/s$$^2$$ and then at the rate of 1.2 m/s$$^2$$. The ratio of the forces exerted by the engines will be respectively equal to

When a force of 1 newton acts on a mass of 1 kg that is able to move freely, the object moves with a/an

A ball of mass $$0.2 kg$$ moves with a velocity of $$20 m/s$$ and it stops in $$0.1 s$$, then the force on the ball is 

When a body is in translatory equilibrium 

A body is said to be under balanced forces when the resultant force acting on the body is

A cannon after firing recoils due to