Question

(a
Convert a speed of 54 km/hr into m/s.
(b)
Change the speed of 6 m/s into km/hr.
(c)
A driver decreases the speed of a car from 25 m/s to 10 m/s in
5 seconds. Find the acceleration of car.​

Answer 1

Answer:

a:- 15 m/s

b:- 0.000009617m/s

Answer 2

Answer:

(a) 54×1000/60×60

540/36=15m/s

(b) 6x60×60/1000

0.6×36=21.6km/hr

Explanation:

(c) v=10m/s , u=25m/s , t=5s

a=v-u/t

=10-25/5

=-15/5

=-3m/s

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