Question

A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds.

Calculate the total distance covered by the body

Answer 1

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Answer 2

first 20 seconds
d=vaverage*time= 20m/s * 20 sec=400m
next 30 seconds
d= 40*30=1200 m
last 25 seconds
d= avgvelocity*time
= 20*25=500m

total distance: add them

Answer 3

I have answered this three times now.