significant figures

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.

Select one:

a. 244.694 m/s

b. 244.69 m/s

c. 244.7 m/s

d. 244.6940 m/s

Answer 1

Hi Gin,

i divided the distance traveled by the time. We can only have an answer with 5 significant figures. That is the time 100.67

the answer is then 244.69 m per second. Answer b