Bob has just finished climbing a sheer clif above a beach, and wants to figure out how high he climbedAll he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a longmeasuring tape. Bob is a pitcher, and knows that the fastest he can throw the ball is 76.0 mph. Bob startsthe stopwatch as he throws the ball (with no way to measure the balls initial trajectory), and watchescarefully. The ball rises and then falls, and after 0.710 seconds the ball is once again level with Bob. Bobcan't see well enough to time when the ball hits the ground. Bob's friend then measures that the balllanded 387 ft from the base of the clf. How high up is Bob, if the ball started from exactly 5 ft above theedge of the cliff?NumberTools76.0 mph0.710 s5 ft387 ftreviousave up & View SolutionQ) Check Answer 0 Nextntje

The angle of projection from the time of flight is,

Answered: Bob has just finished climbing a sheer…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter2: Representing Motion

Section: Chapter Questions

Problem 69A

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The Moon is about 3.8 ✕ 108 m from Earth. Traveling at the speed of light, 3.0 ✕ 108 m/s, how long does it take a laser beam to go from Earth to the Moon and back again (in s)?
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