physics question

Question

On May 5, 1979, Dr. Hans Liebold achieved one of the highest average lap speeds on any closed-circuit racetrack. Racing in a Mercedes-Benz C111-IV experimental coupe in Nardo, Italy, Liebold lapped the 24 633.35 m high-speed track in 100.67 s. Calculate his average lap

speed, and write the answer with the correct number of significant figures.

Answer 1

Average speed is distance/time. In this case that is (24 633.35 m)/(100.67 s) = 244.6940499 m/s

There are 7 sig figs in 24 633.35 m and there are 5 sig figs in 100.67 s so our answer needs to have 5 sig figs. meaning we round it to 244.69 m/s