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A car is initially travelling at 30m/s, which is above the speed limit. The driver sees a speed limit trap ahead and applies th...Asked by P
A car is initially travelling at 30 m/s, which is above the speed limit. The driver sees a speed limit trap ahead and applies the brakes for 5 seconds, causing the car to slow down by 2m/s every second while the brakes are on.
–How far does a car travel whilst the brakes are
being applied?
–How far does a car travel whilst the brakes are
being applied?
Answers
Answered by
Damon
a = -2 m/s^2
v = Vi - 2 t
v = 30 - 2*5 = 20 at the end
so average v = 25 m/s
25*5 = 125 meters
v = Vi - 2 t
v = 30 - 2*5 = 20 at the end
so average v = 25 m/s
25*5 = 125 meters