A car travels 240 km in 2.0 hrs and a sprinter travels a 100 m in 9.5 s. Which is traveling faster the car or the sprinter and by how much?

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~ :)