Question

a cheetah that is running 90 ft./s is a 120 feet behind an antelope that is running 60 ft./s how long will it take a cheetah catch up to the annelid?

Answer 1

Relative speed = 90 feet/s- 60 feet/s
=30 feet/s
Time to catch up=
`(Distance)/(speed)`
Time to catch up=
`(120 feet)/(30 feet/s)`
= 4 s