Question

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(b) A car decreases its speed from 50 km/hr to 20 km /hr Calculate it's acceleration​

Answer 1

Answer:

0.8m/s

Explanation:

u =20×5/18=5.5 ;v =50×5/18=13.8. ; then a=v-u/t where t=10secs then 13.8-5.5/10=0.83

Answer 2

Explanation:

u =20×5/18=5.5 ;v =50×5/18=13.8. ; then a=v-u/t where t=10secs then 13.8-5.5/10=0.83