Respuesta :

manaswigautam02

Answer:

72km/hr

= 72× 1000m/1×60×60 sec

= 72000m/ 3600sec

=20m/s

0.5 m

= 0.5×60 sec

= 30 sec

Now,

acceleration = v-u/t

= 40m/s-20m/s divided by 30 sec

= 20m/s divided by 30 sec

= 0.6m/s2

Explanation:

hope this helps you

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