The motion of a train on a straight track is an example of …………… motion.

1. Two dimensional
2. Three dimensional
3. One dimensional
4. All of these

If a body starts its motion from point A to B and comes back to the same point after a certain time interval, the displacement is:

1. 10
2. 20
3. 0
4. 15

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