Question

Convert each of the following speeds into m/sec:
(i) 36 km/hr
(ii) 81 km/hr
(iii) 9 km/hr​

Answer 1

1. 0036 m /60
2. 0. 081 m/60
3. 0.009 m/ 60

Answer 2

Answer:

(I) 36 × 5/18

= 2×5

=10 m/s

(ii) 81 × 5/18

= 405/ 18

= 22.5 m/s

(iii) 9×5/18

=5/2

=2.5 m/s

The formula is to multiply with 5/18 when converting into m/s

and 18/5 when converting into km/ hr...

THANK YOU