Question

(i) What is force? (ii) When a force is applied to a body, what are the two essential effects it can produce? (iii) Why bicycles do begin to slow down when we stop pedalling? (iv) Define Inertia. Explain types of inertia. Name the physical quantity that measures it. When a tree is shaken its fruits and leaves fall down why? *​

Answer 1

1. force is a push or pull movement
2. the place of the body changes and the shape of the body changes
3. if we stop pedalling the cycle the pressure will decrease and frictional force will react

Answer 2

Explanation:

i)- the force is a push or pull on a object with mass that causes to change its velocity it is a external agent capable of changing a body at the state of rest or motion.

ii)- a)- A force acting on a object may cause the object to change its shape, to start moving to stop moving, to accelerate or declarerate.

b)- When two object interact with each other, the forces are equal in size but opposite in direction.

iii)- When the rider stop peddling the cycle, the force of friction between the tires of cycle and the road acting in the direction of opposite the the direction of motion of cycle, opposes the motion of cycle and this force is now unbalanced, thus the cycle slows down.

iv)- inertia is the resistance of physical object to change its velocity.

hope it helps u!