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How far does a car going 20mps and decelerating at -5mps2 go before it comes to a stop?
Wiki User
∙ 12y ago
Initial speed = 20 m/s
Final speed = 0
Average speed = 1/2 (20 + 0) = 10 m/s
Deceleration = 5 m/s2
Time to stop = 20/5 = 4 seconds
Distance = (average speed) x (time) = (10) x (4) = 40 m
When we first looked at this question, we thought that the 'm' was 'miles'.
But that would have meant that the car is going 72,000 mph until it starts
decelerating at 820 G's, and we realized that before it ever came to a stop,
there would be nothing left of the driver and very little of the car. So we
decided that 'm' is most likely 'meters'.
Wiki User
∙ 12y ago
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