Question

a car traveling at 20km /hr speeds up to 60km /hr in 6 secs . what is its acceleration?

Answer 1

v=u+at
v-u/t=a
60-40/6=a
20/6=a
6.67 metre pr second square is a Acceleration

Answer 2

acceleration is the rate of change of velocity with time .

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initial velocity ,u = 20 km/hr
final velocity ,v = 60 km/hr

acceleration
= (v-u)/t
= ( 60 - 20 ) / 6
= 40/6
= 20/3