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Question
A vehicle moving with a speed of 18 km h–1covers ______ m in 1 s.
Solution 1
A vehicle moving with a speed of 18 km h–1covers 5 m in 1 s.
Explanation:
Using the conversion,
1 km/h = `5/18` m/s
18 km/h = `18xx5/18` = 5 m/s
Therefore, distance can be obtained using the relation:
Distance = Speed × Time = 5 × 1 = 5 m
Hence, the vehicle covers 5 m in 1 s
Solution 2
Speed of vehicle = 18 km/h = `18 xx 1000/3600` m/s
= 5 m/s
∴ the vehicle covers 5 m in 1 s.
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