(a) A 60.0-kg person jumps onto the floor from a height of 3.00 m. If he lands stiffly (with his knee joints compressing by 0.500 cm), calculate the force on the knee joints.

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Chapter1: Units, Trigonometry. And Vectors
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Solve the following problems and show your solution.
(a) A 60.0-kg person jumps onto the floor from a height of 3.00 m. If he lands stiffly (with his
knee joints compressing by 0.500 cm), calculate the force on the knee joints.
(b) Suppose a 30.0-kg package on the roller belt conveyor system in Figure 7.03.2 is moving
at 0.500 m/s. What is its kinetic energy?
(c) Suppose that you push on the 30.0-kg package in Figure 7.03.2. with a constant
force of 120 N through a distance of 0.800 m, and that the opposing friction force averages
5.00 N.
(a) Calculate the net work done on the package. (b) Solve the same problem as in part (a), this
time by finding the work done by each force that contributes to the net force.
Transcribed Image Text:Solve the following problems and show your solution. (a) A 60.0-kg person jumps onto the floor from a height of 3.00 m. If he lands stiffly (with his knee joints compressing by 0.500 cm), calculate the force on the knee joints. (b) Suppose a 30.0-kg package on the roller belt conveyor system in Figure 7.03.2 is moving at 0.500 m/s. What is its kinetic energy? (c) Suppose that you push on the 30.0-kg package in Figure 7.03.2. with a constant force of 120 N through a distance of 0.800 m, and that the opposing friction force averages 5.00 N. (a) Calculate the net work done on the package. (b) Solve the same problem as in part (a), this time by finding the work done by each force that contributes to the net force.
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