Question

Express each of the following speeds in km per hour. (a) 900 m per minute (b) 45 m per second.

Answer 1

hello friend here is ur anss
a. 900m per minute to kmph then multiply it by 18/5, then 900×18÷5= 3240kmph
b. 45m/s = 45×18÷5=162kmph

Answer 2

a) by expressing 900m per minute to /h
= 900 × 18/5
=3240km/h