10. An Olympic high-jumper with a mass of 82.0 kg has a gravitational potential energy of 1970 J at the peak height of the jump. How high is the jump?
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Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.