Chris takes off across level water on his jet-powered skis. The combined mass of Chris and his skis is 90 kg (the mass of the fuel is negligible). The skis produce a forward thrust of 245 N and have a coefficient of kinetic friction with the water of 0.10. Unfortunately, the skis run out of fuel after only 45 seconds (s).
Chris takes off across level water on his jet-powered skis. The combined mass of Chris and his skis is 90 kg (the mass of the fuel is negligible). The skis produce a forward thrust of 245 N and have a coefficient of kinetic friction with the water of 0.10. Unfortunately, the skis run out of fuel after only 45 seconds (s).
A) Draw a free body diagram for Chris when the skis have fuel and are moving him forward. What is his acceleration during this time?
B) Draw a free body diagram for Chris when the skis have run out of fuel. What is his acceleration during this time?
C) How far does Chris travel after his skis run out of power before coming to a stop?
Given :
Combined mass, m = 90 kg
Forward thrust, T = 245 N
Coefficient of kinetic, = 0.1
Time, t = 45 s
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