A racing car traveling along a straight track changes its speed from 12.0m/s to 3.63m/s over a distance of 8.67m. Calculate how much time this takes.

Answer 1

This problem can be set up as a standard CAKE equation exercise (two step required)

However, a short cut is to note that distance traveled = (average velocity ) x time

So 8.67 = (1/2) (12 + 3.63) x time . leading to

time = 1.11 s.