Question

two bodies A and B of same mass are moving with velocity v and 3v respectively , compare their a. inertia b. momentum c. the force needed to stop them in the same time

Answer 1

Both bodies have same intertia as both have same mass.
Momentum of second body will be more as it have more velocity
More force is needed to stop second body as it has more momentum.

Answer 2

Answer:

Explanation:

(a) Inertia is the tendency of a body to remain in fact of motion or remain static until and unless an external force acts on the body and since it depends on mass of body hence M1:  M2 = 1:1 .

(b) The momentum of a body is also called as mass that is in motion if a body has mass and is moving it will definitely have momentum so M1V:M2V ⇒ 1:3 .

(c) Force on a body is also defined as Momentum per unit time hence, M1V/T : M2V/T = 1:3.