Question

18. Write answers of the following:
(a) Mention the direction in which the force of friction acts on a moving body. State its unit.
(b) Name the property of bodies(or objects) to resist a change in their state of rest or of motion.
Name the quantity that is a measure of this property.
(s) Name the physical quantity whose unit is kg m s-1. Define this quantity.
please answer this question​

Answer 1

Answer:

a ) Force of friction acts on a body in the direction opposite to the direction of motion. Its unit is Newton

b) The property of bodies(or objects) to resist a change in their state of rest or of motion or of direction is called Inertia. Mass is a measure of this property

s) It is momentum. Momentum is a vector quantity which is mass × Velocity

s-1) Momentum is a vector quantity which is equal to mass × velocity It is represented by p Its SI unit is kg m/s.

Answer 2

Answer:

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Explanation:

(a) the force of friction acts on moving objects and it's direction is opposite to the direction of motion.

(b) Inertia is responsible for the bodies to resist a change in their state of rest or of motion.

(c) the physical quantity whose SI unit is KG ms•- 1 is momentum.

"Momentum is the quantity of motion contained in an object".

Momentum is denoted by P(vector).

Therefore momentum = mass* Velocity.

I hope this answer must help you