Cheetahs are considered as the fastest land animal. One cheetah observed in the
wild started running from rest and increased its velocity uniformly until it reached
99 km/h. It covered 40 m while running. What is its acceleration? How much time
will it take to cover the said displacement?
By definition, the acceleration is:
where is the final speed, is the initial speed, and is the time of accelration.
The displacement is given as follows:
Substituting the expression for and and expressing , obtain:
Substituting the expression for into the formula for , obtain:
Answer. The acceleration is 9.5 m/s^2, the time is 2.9s.
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