A cheetah can run at approximately 100 km/hr and a gazelle at 80.0 km/hr.If both animals are running at full speed,with the gazelle 70.0 m ahead,how long before the cheetah catches its prey?
A)12.6 s
B)25.2 s
C)6.30 s
D)10.7 s

Question

Quizplus · Accepted Answer

The relative speed of the cheetah with respect to the gazelle is 20 km/hr (100 km/hr - 80 km/hr), which is approximately 5.56 m/s. To cover the 70 m gap at this speed, it takes 70 m / 5.56 m/s = 12.6 seconds.

A Cheetah Can Run at Approximately 100 Km/hr and a Gazelle