Question

2. i) Express the following speed in m/s
a. 54 km/h
b. 135 km/h

Answer 1

Explanation:

to convert into metre per second ×5/18

then , 54kmph

54×5/18

15 m/s

then 135 kmph

135×5/18

37.5 m/s

Answer 2

Answer:

a.54×5/18

=15km/hr

b.135 ×5/18

=486 km/hr

Explanation

a.54÷18=3

3×5=15km/hr

b.135÷5=25

25×18=486 km/hr