Question

(a) Define momentum and state its SI unit. (b) Give reasons:(i)An athlete always runs some distance before taking a jump. Why? (ii) A person might get hurt if he tries to get down from a moving bus (iii) It is easier to move a empty cart rather a full empty cart (iv) The boat will move in the backward direction when a girl jumps from a still boat

Answer 1

Answer:

The unit of momentum is the product of the units of mass and velocity. In SI units, if the mass is in kilograms and the velocity is in meters per second then the momentum is in kilogram meters per second (kg⋅m/s).

SI unit: kilogram meter per second kg⋅m/s