Question

The cheetah is considered the fastest running animal in the world. Cheetahs can accelerate to a speed of 20.0 m/s in 2.50 s and can continue to accelerate to reach a top speed of 28.0 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. 1) Express the cheetah's top speed in mi/h. (Express your answer to three significant figures.)

Answer 1

Answer:

62.6m

Explanation:

We are given that

Speed of Cheetah,v=20 m/s

Time=2.5 s

Top speed=$v'=28m/s$

We have to express Cheetah's top speed in mi/h

1 mile=1609.34 m

1 m=$\frac{1}{1609.34}miles$

1 hour=3600 s

By using these values

$v'=\frac{\frac{28}{1609.34}}{\frac{1}{3600}}$mi/h

$v'=\frac{28}{1609.34}\times 3600$mi/h

Top speed of Cheetah=62.6mph