A luge and its rider, with a total mass of 82 kg, emerge from a downhill track o

Question

A luge and its rider, with a total mass of 82 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 31 m/s. Assume that they stop with a constant deceleration of 2.3 m/s2.
(a) What magnitude F is required for the decelerating force?
____ N

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

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

(d) What is F for a deceleration of 4.6 m/s2?
_____N

(e) What is d for a deceleration of 4.6 m/s2?
_____ m

(f) What is W for a deceleration of 4.6 m/s2?
______ kJ

Explanation / Answer

   Initial velocity, u = 31 m/s

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