Question

Find the acceleration of car when its velocity increases from 20 km/hr to 60 km/hr in 20 seconds​

Answer 1

Answer:

Ans is 0.55 m/sec^2

Explanation:

inital velocity = 20 Km/hr

first we will change it in m/s

so it will be 20×5/18= 50/9 m/s

final velocity = 60 km/hr

in m/s, it will be 60×5/18 = 150/9 m/s

time given is 20 sec

the formula is

a = (final velocity - initial velocity) ÷ time

a = (150/9 - 50/9) ÷ 20

a = 100/180

a = 0.55 m /s^2