science
posted by brianna
A car travels 240km in 2hr. And the sprinter travels 100m in 9.5 seconds. which one is traveling faster and by how much ?

Jai
recall that speed is distance travelled over time. thus we calculate the speed of each. let's also make sure that the units of speed for both are the same.
Car: (convert first the units)
240 km * (1000 m /1 km) = 240000 m
2 hr * (3600 s / 1 hr) = 7200 s
v = d/t
v = 240000/7200
v = 33.33 m/s
Sprinter:
v = d/t
v = 100/9.5
v = 10.53 m/s
thus the car travels faster than sprinter by 33.33  10.53 = 22.8 m/s
hope this helps~ :) 
ais
lalala

Anonymous
nh
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