Question

Express a speed of 35m per sec in km per hour​

Answer 1

126 km/h

Step-by-step explanation:

method 1 : to convert m/sec into km/hr multiply the number by 18/5.

35 m/s → 35 × 18/5 = 126 km/h

method 2 :

35m = 35/1000 km

1s = 1/3600 hour

therefore

35 m/s = (35/1000)÷(1/3600)

= (35/1000) × 3600

= (35×3600)/1000

= (35×36)/10

= 1260/10

= 126 km/h