Problema Solution
sophia runs 60 meters in ten seconds. what is her speed in km per hour?
Answer provided by our tutors
1 km = 1000 m
1 m = 1/1000 km
60 m = 60/1000 km = 3/50 km
1 hr = 60 sec
1 sec = 1/60 hr
10 sec = 10/60 hr
10 sec = 1/6 hr
Since speed = distance/time we have:
v = (3/50)/(1/6)
v = 0.36 km/hr
Sophia's speed is 0.36 km per hour.