Question

13. Express the following speeds in km/h.
(a)
16 m/s
16- m/s
(b) 22 m/s​

Answer 1

Answer:

b) 22 m/s. I think that's helpful you.

Answer 2

Answer:

a.16m/s

=16*18/5

= 288/5

= 57.6km/hr

b.22m/s

=22*18/5

=396/5

=79.2km/hr.

Explanation: Simply ,when we want to change m/s to km/hr we have to multiply the number by 18 and then divide it by 5

As , 1 m = 1/1000km

1 sec= 1/3600hr

=(1/1000)/(1/3600)

=3600/1000

=18/5