Question

A boy runs a distance of 3 m in 1 s. What is his
speed in km/h?
(a) 11.8 km/h
(b) 11 km/h
(c) 10 km/h
(d) 10.8 km/h
please tell me step by step​

Answer 1

(d) is your answer.

EXPLANATION=

v=s/t

v=3/1 m/s

v=3/1 × 18/5 (since 1m/s=18/5 km/hr)

v=10.8 km/hr