Question

A body, starting from rest, attains a velocity of 20 ms-1. The time taken by the body in the displacement
of 50 m is
a) 5 s
b) 10 s
c) 15 s
d) 6 s​

Answer 1

Answer:

10s

Explanation:

Area under acceleration time graph is change in velocity. Direction of velocity is not changing anywhere from 0 to 10 seconds as the acceleration is positive. Since, the body starts from rest the maximum velocity attained is the area under the curve = 55 m/s.