Question

A student runs 100m distance in 20 sec, then speed of the student is ______ m/s
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Answer 1

Explanation:

Speed of car in first 15 minutes = 40 km/h

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes = 6015 hour

Distance covered = 240×6015=10km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60×6015=15km

∴ Total distance covered = (10+15)km = 25 km

∴ 25 km is correct

Answer 2

Explanation:

5 speed = distance /time