Question

Body covers circular path of radius r in 20 seconds. calculate distance and displacement after 70 sec

Answer 1

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

Let the body present at point A.

It covers whole park in 20s

In 20s it take = 1 round

In 1s it take = 1/20 round

In 70s take = 70/20 or 3.5 round.

Now, from moving point A, take one round, then the other and one more round and then a half round (.5 )

Here, you will stop at point B

On joining a kine we get a diameter.

As given radius was "r"

So, diameter or here displacement will be "2r"

Hope it helps