Question

A body travels 200 cm in the first 2 s and 220 cm in the next 5 s. Calculate the velocity at the end of the seventh second from the start.

Answer 1

In the condition of the body is moving with uniform velocity

We are given

Body travels 200cm in 2s

And in next 5s they covered a distance of 220cm

we have to find that how many distance covered by object in first five second

we know that
2+5=7

then,

we add the the distance of 2s and the distance of next 5s which is equal to first 7s

200+220=420

Velocity of first seven second is 420cm