Forces and Laws...

Choose the correct option.

If given is the direction of acceleration, where should the direction of force be?

A bowling ball hits a pin as shown, where $$F_{BP}$$ represents the force applied by the ball on the pin. Which arrow shows $$F_{PB}$$ (force applied by the pin on the ball) correctly?  

Which one of these is a real life application of the third law of motion?

The acceleration of a body depends on:

 A nail driven into a wall by striking it with hammer is an example for 

Swimming is possible on account of :-

The action and reaction force referred to in the third law

An object of mass 10 kg moves at a constant speed of 10m/s. A constant force that acts for 4 sec on the object gives it a speed of 2m/s in opposite direction. The force acting on the object is:

A man is standing on a spring platform. The reading of spring balance is 60 kg wt. If the man jumps outside the platform, then the reading of the spring balance: