10. 10 4.P075 A water skier has a mass of 73 kg. (a) Find the magnitude of the n

Question

10. 10 4.P075 A water skier has a mass of 73 kg. (a) Find the magnitude of the net force acting on the skier when she is accelerated from rest to a speed of 10 m/s in 9.0s (b) Find the magnitude of the net force acting on the skier when she lets go of the tow rope and glides to a halt in 30 s Section 4.12 11. 0-1 points CJ104P081. A 285-kg log is pulled up a ramp by m kinetic friction between the log and the ramp is 0.820, and the log has an acceieration of 0.900 m/s2, Find the tension in the rope eans of a rope that is parallel to the surface of the ramp. The ramp is inclined at L Section 4.12

Explanation / Answer

a.

acceleration = 10/9 = 1.11m/s2

Net force =ma = 73x1.11 = 81.11N

b. retardation = (0-10)/30 = -1/3 m/s2

Net force = ma = 75 x 1/3 = 25N

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