Question

A body is moving with a constant acceleration travels the distances 3m and 8m respectively in 1s and 2s. Calculate :(i) the initial velocity, and (ii) the acceleration of body.

Answer 1

if acceleration is constant so there is no change in velocity hence acceleration is 0
now,
initial velocity
by the 2nd equation s = ut + 1/2 at^2
8m = u x 2 + 1/2 x0
8m = 2u
u = 4 m/s