Question

Aakar increase its speed from 20 kilometre per hour to 50 kilometre per hour in 10 seconds what is its acceleration

Answer 1

for converting km/h to m/s we should multiply it by 5/18

20×5/18=50/9m/s

50×5/18=125/9m/s

v=125/9m/s

u=50m/s

t=10 second

a=(v-u)/t

=(125/9-50/9)/10

=(75/9)/10

=(25/3)/10

=25/30

=5/6m/s²

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