72 km/hr = 72 × 1000/60 × 60 = 720/36 = 20 m/sec [1 km = 1000 m and 1 hr = 60 x 60 sec] ...

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Standard X

Physics

Average Speed

72 km / h =- ...

Question

72 km/h = ___m/s.

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Solution

$72 k m / h r =$ $\frac{72 \times 1000}{60 \times 60} =$ $\frac{720}{36} =$ $20 m / s e c$

[1 km = 1000 m and 1 hr = 60 x 60 sec]

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72 km/h = ___m/s.

72 km/hr= 72 × 100060 × 60= 72036= 20 m/sec [1 km = 1000 m and 1 hr = 60 x 60 sec]

$72 k m / h r =$ $\frac{72 \times 1000}{60 \times 60} =$ $\frac{720}{36} =$ $20 m / s e c$

[1 km = 1000 m and 1 hr = 60 x 60 sec]