Question

A vehicle moving with a speed of 18 km h^–1covers ______ m in 1 s.

Answer 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

Answer 2

Speed of vehicle = 18 km/h = `18 xx 1000/3600` m/s

= 5 m/s 

∴ the vehicle covers 5 m in 1 s.