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Consider an experiment where a subject lands during two conditions from a height of 0.2 m. During the first landing condition, the subject lands 'stiffly' (e.g., very little knee flexion). During the second landing condition, the subject lands 'softly' (e.g., lots of knee flexion). During the soft landing, the peak vertical forces are less than during the stiff landing. Which of the following statements best explains this observation? A. The length of time a force is applied is increased during the soft landing compared to the stiff landing. B. The momentum at impact is less during the soft vs. stiff landing conditions. C. The acceleration of the subject would be greater during the soft landing compared to the stiff landing. D. The impact velocity would be greater for the stiff compared to the soft landing.
A 20 {rm kg} child plays on a swing having support ropes that are 2.3 {rm m} long. A friend pulls her back until the ropes are 39.0^circ from the vertical and releases her from rest.
What is wind velocity
A 67.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between skis and snow is 0.19. What would be the magnitude of the acceleration.
suppose that r2/r1 = 10.0 cm and ignoring any air inside the shell, find the temperature of the outer surface of the shell.
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At the very bottom of the circle, a too sharp knife is suddenly inserted to cut the string directly below the point of support. How far to the right of where the string was cut does the ball hit the floor.
Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 0.9 m.
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What are magnitude and direction of net electrostatic force
You can launch the proton from the surface of a sphere of with charge Q and radius R, from the center of a ring of charge Q and radius R, or from the center of a disk of charge Q and radius R. Which is the best choice.
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