Question

Finally, you are ready to answer the main question. Cheetahs, the fastest of the great cats, can reach 50.0 miles/hour in 2.22 s starting from rest. Assuming that they have constant acceleration throughout that time, find their acceleration in meters per second squared.

Answer 1

Acceleration of cheetah is 10 m/s²

Explanation:

We have equation of motion v = u + at

     Initial velocity, u =  0 m/s

     Final velocity, v = 50 miles/hr = 80 km/hr = 22.22 m/s    

     Time, t = 2.22 s

     Substituting

                      v = u + at  

                      22.22 = 0 + a x 2.22

                      a = 10 m/s²

     Acceleration is 10 m/s²

Acceleration of cheetah is 10 m/s²