Question

if a cars speed is 2km/h and increase to 69km/hr in 6 second , find its acceleration​

Answer 1

Answer:

The acceleration of the car is 3 m/s^2 (approx )

Step-by-step explanation:

Given ,

Initial velocity of the car, u = 2km/h

= 2*1000m / 60*60s

= 0.56 m/s

Its final velocity, v = 69km/hr

= 69*1000m / 60*60s

= 19.17 m/s

Time, t = 6s

We know that,

Acceleration,a = Change in velocity / time

•°• a = v-u / t

= {(19.17 - 0.56) m/s} / 6s

= {18.61 m/s} / 6s

= 3.10 m/s^2

= 3 m/s^2 ( approx )