Question

exprees each of the following speeds in mertre per second. (a) 72 km per hour​

Answer 1

Answer:

72 x 5/18

=> 4x 5

=> 20m/sec

Answer 2

Answer:

1st method:

72 km/h =( 72 × 1000) / 60 × 60

= 72000/3600

= 20 m/s

2nd method:

72 km/h = 72 × 5/18

= 4×5

= 20 m/s

Step-by-step explanation:

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