Question

a train starting from rest moves with uniform acceleration of 5m/s² find its velocity when it has travel a distance of 1km

Answer 1

Ans. is 100 m/s
solution is in the pic

Answer 2

Given that,

Acceleration = 5 m/s²

Distance = 1 km

We need to calculate the velocity of train

Using equation of motion

$v^2=u^2+2as$

Where, u = initial velocity

a = acceleration

s = distance

Put the value into the formula

$v^2=0+2\times5\times1\times10^{3}$

$v=\sqrt{2\times5\times1\times10^{3}}$

$v=100\ m/s$

Hence, The velocity of train is 100 m/s