Question

plz solve it step by step

Answer 1

speed in m/s
100/20 = 5 m/s.
speed in km/hr
100/1000 is dis.
time = 20/60×60 = 1/180
now speed in km/hr
(1/10÷1/180) = 18 km/hr
use can also use formula
from m/s to km/hr.
5×18/5= 18km/hr

Answer 2

(A) 5m/s ( B) 18km/h