Question

Scientists have measured a cheetah running across the savanna at 70 m/s. Which of these data accurately measured the cheetah’s speed?
480 m in 6 sec
600 m in 10 sec
210 m in 3 sec
300 m in 5 sec

Answer 1

Answer:

210 m in 3 sec

Explanation:

The speed of the Cheetah is given to be 70m/s .

   We know that:

         Speed  = $\frac{distance }{time}$  

Now we find the choice that gives 70m/s:

480 m in 6 sec

          Speed  = $\frac{480}{6}$   = 80m/s

600 m in 10 sec

           Speed  = $\frac{600}{10}$   = 60m/s

210 m in 3 sec

            Speed  = $\frac{210}{3}$   = 70m/s

300 m in 5 sec

          Speed  = $\frac{300}{5}$    = 60m/s

So the solution is 210 m in 3 sec