Question

A car moving at a velocity of 25 m / s accelerates at a rate of 6 m / s2. Find its velocity after 3s?

Answer 1

acc. to equation of motion v = u + at
so v = 25 + 6 * 3 = 43 m /s

Answer 2

u = 25m/s
a = 6m/s²
t = 3s
v = u + at
⇒ v = 25 + 6×3
⇒ v = 25+18
⇒ v = 43 m/s