The distance travelled by a body in 10 s when it travels with a uniform speed of 10 ms-1 is:

1. 100 m
2. 1 m
3. 20 m
4. 50 m

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 unit of retardation is —

1. m s^-1
2. m s^-2
3. m
4. m s²

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