For a particle in motion, which of the following quantity can be zero at any given instant?

1. Displacement
2. Distance
3. Speed
4. None of these

The S.I. unit of velocity is —

1. km h^-1
2. m min^-1
3. km min^-1
4. m s^-1

18 km h^-1 is equal to —

1. 10 m s^-1
2. 5 m s^-1
3. 18 m s^-1
4. 1.8 m s^-1

The value of g does not depend on the:

1. Height of the body
2. Mass of the body
3. Shape of the body
4. All of these