The unit of linear momentum is —

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

According to Newton's second law, the acceleration produced in a body is:

1. inversely proportional to the force applied on it
2. directly proportional to the force applied on it
3. not dependent on force
4. none of these

Linear momentum is a :

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