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First Year Physics Help…?

) Sam, whose mass is 75 kg, takes off accross level snow in his jet powered skis. The skis have a thrust of 197 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of fuel after only 8 s.(a) What is Sam’s top speed?(b) How far has Sam traveled when he finally coasts to a stop?Any help would be awesome! thank you!
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Dr. Juanita Wolff

Feb 20, 2025

(a). a = (F – f_friction)/ma = (F – µ m g)/ma = (197 – 0.1 * 75 * 9.8)/75a = 1.647 m/s²v = a t = 1.647 * 8v = 13.173 m/s(b). conserve of energyfirst stage condition;F s = ½ mV² + µ m g s197 s = ½ (75)(13.173)² + 0.1 (75)(9.8) ssolve for s, we gets = 52.693 msecond stage condition;½ mV² + (- µ m g S) = 0½ (75)(13.173)² + (- 0.1 * 75 * 9.8 S) = 0solve for S,S = 88.535 mtotal distance = s + S = 52.693 + 88.535 = 141.23 m... Show More
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