In the case of a force varying with position, what feature of the graph of force vs. position represents the work done during a displacement?
1.the maximum force times the maximum position
2.the beginning force times the total displacement
3.the area under the curve
4.nothing
Question 2
A ball is thrown straight up in the air. At what position is its kinetic energy a maximum? At what position is the gravitational potential energy of the ball-Earth system a maximum? Consider only the trip up.
1.The maximum kinetic energy occurs at the top of the ball's trajectory and the maximum gravitational potential energy occurs at the top of the ball's trajectory.
2.The maximum kinetic energy occurs at the point of release and the maximum gravitational potential energy occurs at the point of release.
3.The maximum kinetic energy occurs at the point of release and the maximum gravitational potential energy occurs at the top of the ball's trajectory.
4.The maximum kinetic energy occurs at the top of the ball's trajectory and the maximum gravitational potential energy occurs at the point of release.
Position for Otoscopic Examination
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