Question

The speed of an object can be found by dividing the distance traveled by the time it took. It takes Jamal $36$ seconds to skate once around a $500\text{ }\text{m}$ rink. If it takes Tory $40$ seconds to skate the same distance, what is the difference in their speeds?

Answer 1

Difference = 13.9 m/s

Explanation:

Speed of an object = distance traveled/time taken

Jamal takes 36 seconds to skate 500 m rink. Let his speed is v. So,

`v=(500\ m)/(36\ s)\\\\=13.89\ m/s`

Tory takes 40 seconds to skate 500 m rink. Let his speed is v'. So,

`v'=(500\ m)/(40\ s)\\\\=12.5\ m/s`

The difference in their speeds,

D = 13.89 - 12.5

= 1.39 m/s

Hence, the difference in their speeds is 13.9 m/s.