Question

A body with an initial velocity of 8 m/s accelerates uniformly at the rate of 9cm/s². If the distance covered by the body is 200 m, calculate 2M

a) The final velocity
b) the time taken to cover the distance (in SI Units)​

Answer 1

Explanation:

Correct option is

B

7.81

Given, initial velocity u=18kmh−1

                                       =60×6018000m=5ms−1

Acceleration a=0.09ms−2

and distance s = 200 m

From equation of motion v2=u2+2as,

We get, v=52+2×0.09×200m/s=7.81m/s