Question

A body of mass 10 kg accelerates from rest at the rate of 3 m/sec2. What distance would the body travel in 10 seconds?

Answer 1

Body accelerates from the rest at the rate of 3 m/s².
means , initial velocity of body is zero. e.g., u = 0 m/s²
acceleration , a = 3 m/s²

question wants , distance travelled by the body in 10 second
t = 10 sec.

so, we have to use formula,
$\bold{S = ut + \frac{1}{2}at^2}$
Put a = 3m/s², u = 0, t = 10sec
$\bold{S = ut + \frac{1}{2}at^2}\\\\\bold{S = 0\times10 + \frac{1}{2}\times3\times10^2}\\\\\bold{=150}$