Question

Recently your exams were conducted online. Write a letter to your father telling him how you have fared in your examination. You are Ramneek / Rama of Hostel No. 1, St. Kabir Public School, Panipat

Answer 1

Explanation:

450m ÷ 22.5 s = 20m per s

Speed = 20 m/s

1000m = 1km

60s = 1 minute(min)

60min = 1 hour (h)

1 h = 3600s

Solution:

Speed = 20 m /s:

20 m × 3600s = 72000 m

1s × 3600s = 3600 s

Speed = 72000 m/3600s

Since 1km = 1000m, we have to

72000÷1000= 72km

3600s= 1h

Speed = km/h

Speed = 72km/h

Answer 2

Explanation:

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