The force needed to stop a moving body in a definite time depends on:

1. mass of the body
2. velocity of the body
3. both (a) and (b)
4. none of these

The unit of linear momentum is —

1. N s
2. kg m s^-2
3. N s^-1
4. kg² m s^-1

Newton's first law of motion defines force :

1. quantitatively
2. qualitatively
3. both (a) and (b)
4. none of these

Linear momentum is a :

1. scalar quantity
2. vector quantity
3. directionless quantity
4. none of these