Question

A car starts from rest and accelerates uniformly at 2m/s(square) for 10sec. What is it's velocity at the end of 10sec?

Answer 1

here, initial velocity u = 0
acceleration. = 2
time taken = 10
let, final velocity = v

so, from the equation v=u+at
v = 0+2*10
=20

answer: velocity at end of 10 sec will be 20m/s

Answer 2

u=0m/s
t= 10 sec
a= 2m/sec²
v= ?
a= v-u/t
⇒2=v-0/10
∴v=20m/s