science
Grade-7
Easy

Question

A truck covers 180 km in 5 hours. Its speed is ___ m/s.

  1. 10

hintHint:

10m/s

The correct answer is: 10


    • Speed of a truck= distance/time
    • We are given with distance = 180 Km and time = 5h
    • By using formula, we get,
    •                 S p e e d space equals space fraction numerator 180 K m over denominator 5 h end fraction space
space space space space space space space space space space space space space space equals space 36 space K m divided by h
space space space space space space space space space space space space space space equals space 36 space cross times fraction numerator 5 space m over denominator 18 space s end fraction
space space space space space space space space space space space space space space equals space 10 space m divided by s


    =180/5
    =36km/h
    =36×(5/18)m/s
    =10m/s

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