Question

. A body starts from rest and moving with constant acceleration for 10 seconds and reaches velocity of 20m/s. After that it moves with constant velocity for 10seconds and then comes to rest in next 5 seconds with constant deceleration. The total distance covered in 20 seconds is​

Answer 1

Answer:

s=300m

Explanation:

In the first case find acceleration from 1st equation of motion and put it in the second equation to find distance in first 10s. Now in second case 20m/s becomes initial velocity and a=0 as it is moving with constant velocity. Now use second equation of motion again to find distance during next 10s. Add up both the distances to get the answer.