A ball is thrown with an initial upward velocity of 5 m/s. What is its velocity after 1.5 seconds, and what is the direction of velocity? Answer: 9.7 m/s, downward

A researcher tests the acceleration due to gravity by dropping a pebble in an evacuated tube. After 0.5 seconds the pebble falls 1.226 meters. What is the acceleration due to gravity measured by the researcher? Answer: 9.808 m/s

Object A is located directly above Object B. Object B is dropped

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Object A is located directly above Object B, and they are separated by a distance of 5 meters. Object A is thrown downward at a velocity of 1 m/s, and at the same time Object B is thrown upward at a velocity of 1 m/s. When do the two objects meet? Answer: At 2.5 seconds

A ball is thrown upward at a velocity of 3.5 m/s. What is the greatest amount of time that must pass, after the ball is thrown, so that the ball is 0.25 meters above its launch point? Answer: 0.634 seconds

In the figure below, solve for A, B, and C. Answer: A = 1, B = -19.6, C = -29.4

Person 1 is inside an elevator, with inside height

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Answer for Problem # 3

The value of

Answer for Problem # 7

The simplest calculation is based on the perspective of Person 1, since this person sees the ball fall from zero initial velocity (in his reference frame), and since the elevator is moving in a straight line at constant velocity, this is an inertial reference frame. This means that the falling time of the ball can be easily calculated by solving for

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