Question

a car starting from rest and moving with uniform acceleration attains a speed of 60km/h in 20minutes .find its acceleration in km/h​

Answer 1

Explanation:

The acceleration of the body is the change in its velocity divided by the elapsed time.

Given: the elapsed time is 5 minutes or 300 seconds. Its initial velocity is zero and its final velocity is 16 KPH.

Solving for is acceleration:

acceleration = (final velocity - initial velocity) / 300 s

acceleration = (16 KPH - 0) / 5 min

acceleration = 3.2 km/h/min

acceleration = (3200 m/3600 s) / 60 s

acceleration = 8/9/60 m/s^2

acceleration = 8/(9*60) m/s^2

acceleration = 0.0148 m/s^2

Answer 2

Answer:

the above one is not correct

because he wrote for 16 and 5 not for 60 and 20