Question

A car increases the speed from 20km/h to 50km/h in 10 sec. What's is acceleration

Answer 1

acceleration is change in velocity per unit timea = (v2-v1) / (t2-t1)v2-v1
=> 30 kmph
= 30×5/18 m/s
 = 25/3 m/st2-t1
= 10sa
= 25/(3×10)
 = 5/6 m/s^2