The name of force responsible for the downward motion of the parachute is force of gravity. No, because the air friction will become less.

Two forces are as follows:
(i) Gravitational force
(ii) Friction due to air or force of friction

When blacksmith hammers a hot piece of iron, the force due to hammering can change the shape of the piece of iron. In other words, we can say that force applied through the hammer by the blacksmith can mould the hot piece of iron into any kind of tool.

A force that appears due to physical contact of two objects is called contact force.

SI unit of pressure is N / m² or pascal.

We apply a force on ground while walking and ground applies reaction force on our foot due to which we are able to move forward.

The shape of dough is changed due to muscular force applied by the hand.

Forces can be of two types:
(i) Contact forces.
(ii) Non-contact forces.
(i) Contact forces : The forces that come into play when two objects come in contact with each other.
(a) Muscular force: The force which is exerted due to action of muscles is known as the muscular force. e.g., running, bending, walking etc.
(b) Frictional Force: The force responsible for changing the state of motion of an object. Equal and opposite forces are being exerted on an object when its surface comes in contact with other surface. e.g., a car or scooter comes to rest.
(ii) Non-contact forces: The forces that can be exerted from a distance without establishing a contact are called the non-contact forces.
(a) Magnetic forces : Force exerted by a magnet on another magnet or magnetic substances like iron is called magnetic force. e.g., Car sticking to an electromagnet.
(b) Electrostatic force : Force exerted by a charged body on another charged body or uncharged body is called electrostatic force. e.g., If we rub a comb with hair and bring it near some small bits of paper it attracts the bits of paper towards itself. This is electrostatic force.
(c) Force of gravity : The earth pulls every object towards its centre. The force exerted by the earth is called the force of gravity.

(a) In horse pulling a cart situation muscular force is involved.
(b) Due to magnetic force, a sticker attached to steel almirah without the glue.
(c) Due to gravitational force, a coin gets fall down on the ground on slipping from the hand.
(d) Due to electrostatic force, a plastic comb rubbed in dry hair picked up tiny particles of hair.
(e) Due to frictional force, a moving boat coming to rest when rowing is stopped.

(a) Here, F = 50N, A = 5 cm² = 5 x10^-4 m²
\(\therefore p=\frac{F}{A}=\frac{50}{5\times10^{-4}}=10^{5}\) Pa
(b) Here, area changes to 50 cm²= 50 x 10^-4 m²
\(\therefore p=\frac{F}{A}=\frac{50}{5\times10^{-4}}=10^{4}\)Pa
(c) Here the values displayed by the teacher is the experience and his ideality.