A train travels the first 20 km at a uniform speed of 40 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey.

Define the term ‘uniform acceleration’. Give one example of a uniformly accelerated motion.

The distance between Delhi and Agra is 400 km. A train travels the first 200 km at a speed of 100 km/h. How fast must the train travel the next 200 km, so as to average 140 km/h for the whole journey?

A car is moving along a straight road at a steady speed. It travels 200 m in 5 seconds :

(a) What is its average speed?

(b) How far does it travel in 1 second?

(c) How far does it travel in 6 seconds?

(d) How long does it take to travel 240 m?

A particle is moving in a circular path of radius r. The displacement after a circle would be:

A. 0

B. pr

C. 2r

D. 2pr