Question

solve this question​

Answer 1

Answer:

-10/9

Explanation:

First convert km/hr to m/s ..

acceleration = Change in velocity / Total time

= Final - Initial vel / Time

= 60-80km/hr / 5sec

= -20 × 5/18 / 5

= -10/9

Answer 2

Answer:

1.12m/s2

Explanation:

u=80km/h=80×5/18=200/9

v=60km/h=60×5/18=150/9

t=5s

a=v-u/t

=200/9-150/9/5

=50/9/5

=10/9

=1.12m/s2