Question

b)
A car accelerates uniformly from 18km/h to 36 km/h in
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5 minutes, find the rate of change of its velocity.​

Answer 1

Answer:

A car accelerates uniformly from 18km to 36km h in 5s calculate the acceleration and the distance covered by the car in that time.  

Asked by shobhavittal.sv | 30th Jul, 2019,  07:45: PM

Expert Answer:

Initial speed = u = 18 km/hr = 5 m/s

 

Final sped = v = 36 km/hr = 10 m/s

 

acceleration a = (v-u)/t = (10-5)/5 = 1 m/s2

 

Distance travelled S = u t + (1/2) a t2 = 5×5 + (1/2)×1×52 = 37.5 m

Explanation: