Jason takes off from rest across level water on his jet-powered skis. The combined mass of Jason and his skis is 75 kg (the mass of the fuel is negligible). The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.10. Unfortunately, the skis run out of fuel after only 48 s. What is Jason's top speed?
A) 81 m/s
B) 130 m/s
C) 13 m/s
D) 48 m/s

Question

Quizplus · Accepted Answer

The net force is the thrust minus the frictional force (0.10 * 75 kg * 9.8 m/s²). Using F = ma, calculate acceleration, then use v = u + at to find the top speed after 48 s.

Jason Takes Off from Rest Across Level Water on His