(a) A magazine article states that cheetahs are the fastest sprinters in the animal world and that
a cheetah was observed to accelerate from rest to 70 kilometers per hour in 2 seconds. What
average acceleration in meters per second squared does this require?
(b) The article also says the cheetah covered 60 meters during this 2 second interval. How large a
constant acceleration is implied by this statement? Does it agree with your result in (a)?
(c) Accelerations substantially greater than g are difficult for an animal or automobile to attain, because
there is a tendency to slip even on very rough ground with larger acceleration. Given this
information, can you guess which number is wrong in the article?
1 answer