Due to force of gravity, the value of acceleration on the moon is one-sixth of its value on the earth. Because of this rule the weight of an object on the moon will be the one-sixth than on the earth.

We don't fall because of the force of gravity that pulls us towards the middle of the earth, rotating at a constant rate, and keep our feet firmly on the surface of the earth.

A Jet Engine is a re-action engine -an engine which provides propulsion or thrust by expelling a reaction mass - and works according to Newton's third rule of motion: "For every action there is an equal and opposite reaction".

Swing of ball is an art that can be explained through aerodynamics. The swing of the ball is ultimately caused by the asymmetric air flow on either side of the ball and the pressure exerted on the ball with the upper portion on the table.

Since momenta of heavy body and light body are same, the velocity of lighter object is greater than that of heavier. Kinetic energy is proportional to the square of velocity. Hence lighter object has greater Kinetic energy.

Due to higher center of gravity and limited suspension a car overturn quickly on a curved road. In other way, when a car overturn quickly on a curved road, its lower part moves towards the center very quickly, but its upper part doesn't follow accordingly.

As the train is running, the ball with the boy is also running in a same horizontal velocity. Hence the ball will come back to the hand of the boy.

First rule-An object will not change its motion unless any external force acts on it. Second rule-Heavier objects need a larger force to move them. third rule-For every action there is an equal and opposite reaction.

Rocket Engine works based on third rule of Sir Isaac Newton-"For every action there is an equal and opposite reaction."

Convection results in the tendency to expand when heated-Water, Air etc.