Question

A car accelerts uniformly from 18km/h to 36 km/h in 5 sec calculate, acceleration

Answer 1

Answer:

Acceleration of car is 1 m/s^2.

Explanation:

Given,

Firstly we. convert velocities into m/s.

Vi = 18 km/hr

Vi = 18 × 5/18 m/s

Vi = 5 m/se

Vf = 36 km/hr

Vf = 36 × 5/18

Vf = 2 × 5 m/s

Vf = 10 m/a

t = 5 seconds

To find

Acceleration of car

a = ∆V/t

a = (Vf - Vi)/t

a = (10 - 5 ) / 5 m/s^2

a = 5/5 m/s^2

a = 1 m/s^2

Here,

a is the acceleration of car.

∆V is the change in velocity.

Vi is the initial velocity of car.

Vf is the final velocity of car.

t is the time taken.

To convert km/hr into m/s .

We can multiply by 5/18.

Hence,

Acceleration of car is 1 m/s^2.