Question

An athlete completes one round of a circle track of radius R in 20 seconds. The average speed of athelete of 1 minutes 10 seconds:​

Answer 1

Answer:

2R

Explanation:

Total time duration in consideration =2 min 20 sec=140 sec

He completed 1 round in 40 sec

In 140 sec, he will cover =

40

140

=3.5 rounds

After 3.5 rounds, he would be on the opposite side of the starting point

So, the displacement will be the diameter or 2R.

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