The length, breadth and height, of a given rectangular box, are $100 \mathrm{cm}, 50 \mathrm{cm}$ and $20 \mathrm{cm}$, respectively. This box is kept on ground in three different ways, one by one. Which of the following statements is the correct statement about the pressure exerted, by this box, on the ground?

In the following situation, identify the agent exerting the force. Also, state the effect of the force.

Squeezing a piece of lemon between the fingers to extract its juice.

In the following situation, identify the agent exerting the force. Also, state the effect of the force.

A person diving into a swimming pool.

In the following situation, identify the agent exerting the force. Also, state the effect of the force.

A car comes to rest once its engine is switched off.

In the following situation identify the agent exerting the force and the object on which it acts. State the effect of the force in the case. 

An athlete making a high jump to clear the bar at a certain height.

Differentiate Between the Following :

Balanced and unbalanced forces.