Estimating the constant deceleration


A luge and its rider, with a total mass of 81 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 32 m/s. Assume that they stop with a constant deceleration of 3.2 m/s2.

(a) What magnitude F is required for the decelerating force?

(b) What distance d do they travel while decelerating?

(c) What work W is done on them by the decelerating force?

(d) What is F for a deceleration of 6.4 m/s2?

(e) What is d for a deceleration of 6.4 m/s2?

(f) What is W for a deceleration of 6.4 m/s2?

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Physics: Estimating the constant deceleration
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