Question

Convert the following speeds into km hour per second
(b) 10 m s-1
(a) 2 ms-1
(c) 12.5 ms-1
(d) 15 ms-1​

Answer 1

Answer:

Explanation:

Formulae for converting m/s to km/h

= m/s * 18/5

(i) 10 m/s = 10 * 18/5

= 36 km/h

(ii) 2 m/s = 2 * 18/5

= 7.2 km/h

(iii) 12.5 m/s = 12.5 * 18/5

= 45 km/h

(iv) 15 m/s = 15 * 18/5

= 54 km/h

Reason for using 18/5 =

1 meter = 1/1000 kilo meter

1 second = 1/3600 hours

So 1 meter/1 second = (1/1000)/(1/3600) km/h

= 3600/1000 km/h

= 18/5 km/h

Hope it helps you

Answer 2

Answer:

nice...................