A 740N student is standing on a frictionless frozen pond with a radius of 5.2 meters....
A 740N student is standing on a frictionless frozen pond with a radius of 5.2 meters. He throws a 3.2 kg textbook toward the shore at 5.6m/s. Gravity = 9.81m/s^2. How long does it take the student to reach the shore in seconds?
Homework Answers
Mass of student
M=740/9.81 =75.433 Kg
By Conservation of momentum
MV+mv =0
75.433*V+3.2*5.6=0
V=-17.92/75.433=-0.23756 m/s
V=0.23756 m/s (in opposite direction to book)
Time taken by student to reach the shore is
t=d/V =5.2/0.23756
t=21.89 s =21.9 s
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