Question

A car starts from rest and attends a velocity of 18 km per hour in 2 seconds find its acceleration in SI unit

Answer 1

Heya!!!

Here is your answer.

Given :

Car starts from rest. So, u = 0.
v = 18 km/h = 18 × 5/18 = 5 m/s.
time = 2 secs.

Using,
v = u + at
a = v/t
= 5/2 = 2.5 m/s²

Hope It hlps

Answer 2

Given that,
u = 0
v = 18 km/h
Converting km/h in m/s
18 × 5/18 = 5 m/s.
t = 2 sec.
Now,
a = v - u / t
= 5 - 0 / 2
= 5 / 2
= 2.5 m/s^2.