Newton's third law —

1. defines the force qualitatively
2. defines the force quantitatively
3. explains the way a force acts on a body
4. gives the direction of force.

The motion of a boat moving away from the shore is an example of :

1. Newton's first law
2. Newton's second law
3. Newton's third law
4. not related with Newton's law

A footballer hits a football with a force of 10 N. What force does the footballer experience ?

1. 5 N
2. 10 N
3. 20 N
4. 15 N

Out of the following statements, which one is correct ?

1. the sum of action and reaction on a body is zero.
2. action and reaction act on different bodies in opposite direction.
3. action and reaction are always in opposite direction on the same body.
4. action and reaction act on different bodies in the same direction.