Question

at a certain instant and auto driver driving at a speed of 30 km per hour then he uniformly accelerated the auto and after 2.5 minutes the speed of his auto become 60 km per hour what is the average speed of the auto what is the value of uniform acceleration during the given interval of time

Answer 1

average speed=2v1*v2/t1+t2

Answer 2

Answer: 30 km in one hou

Then 60km in one hour as time is same in both cases apply mathematical mean ie

30+60/2= 45 kk/h

a= v-u/t =60-30/2.5/60= 720km/hour square