Question

a body starts from rest with uniform accelerati on. if it's displacements in the 3rd second and 7th second are x1and x2 then

Answer 1

Here

We can use equation motions to get the answer .

S= ut + 1/2 at^2

Time = 20 seconds

Initial velocity = 0

Acceleration = 5

S = 20×0 + 0.5 ×5×400

S = 1000 m