contestada

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?

Respuesta :

Answer:

Difference = 13.9 m/s

Step-by-step explanation:

Speed of an object = distance traveled/time taken

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

[tex]v=\dfrac{500\ m}{36\ s}\\\\=13.89\ m/s[/tex]

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

[tex]v'=\dfrac{500\ m}{40\ s}\\\\=12.5\ m/s[/tex]

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.

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