(i) Define linear momentum of a body and state its SI unit. (ii) A constant…
PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
(i) Define linear momentum of a body and state its SI unit.
(ii) A constant unidirectional force acts on a body that is initially at rest. Using appropriate reasoning, explain how the change in the body’s momentum depends on the duration for which the force acts.
(iii) If the same force acts for twice the original time interval, what qualitative change (increase, decrease or no change) occurs in the final velocity of the body? Justify your answer with suitable arguments.