Question

Q25. Velocity of a body changes from 18 km/h to 90 km/h in 10 second calculate acceleration in body.

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Answer 1

Answer:

v=u+at

v=90 km/h=25m/s

u= 18 km/h=5m/s

t= 10s

a=?

25=5+10a

20=10a

a=2m/s2

Answer 2

Answer:

a= Vf-Vi/t

Explanation:

a= 25-5/10

a= 2 m/s^2

we convert 90km/hr into m/s which is 25 m/s

and also 18km/hr into m/s is 5 m/s