Question

a body starts from rest and moves with the uniform acceleration of 3 meter per second square what will be the velocity at end of 15 second​

Answer 1

Using the equations of motion,

s = ut+1/2 at^2

v = u + at,

where

s = displacement,

u = initial velocity

a = acceleration

t = time

Using the first equation s = ut+1/2 at^2

1ooom = 0(t) +1/2(a)(100s)^2

Solving for a, we obtain:

a = 0.2m/s^2

Using the other equation of motion:

v = u + at,

v = 0 + (0.2m/s^2)(100s)

v = 20m/s