A batter hits the baseball A with an initial velocity of vo = 125 ft/sec directly toward fielder B at an angle of 21° to the horizontal; the initial position of the ball is 1.5 ft above ground level. Fielder B requires 0.47 sec to judge where the ball should be caught and begins moving to that position with constant speed. Because of great experience, fielder B chooses his running speed so that he arrives at the "catch position" simultaneously with the baseball. The catch position is the field location at which the ball altitude is 6.8 ft. Determine the velocity of the ball relative to the fielder at the instant the catch is made. 121 1.5' B 258' Answer: VA/B = (i i+ i j) ft/sec

A batter hits the baseball A with an initial velocity of vo = 125 ft/sec directly toward fielder B at an angle of 21° to the horizontal; the initial position of the ball is 1.5 ft above ground level. Fielder B requires 0.47 sec to judge where the ball should be caught and begins moving to that position with constant speed. Because of great experience, fielder B chooses his running speed so that he arrives at the "catch position" simultaneously with the baseball. The catch position is the field location at which the ball altitude is 6.8 ft. Determine the velocity of the ball relative to the fielder at the instant the catch is made. 121 1.5' B 258' Answer: VA/B = (i i+ i j) ft/sec

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

A batter hits the baseball A with an initial velocity of vo = 125 ft/sec directly toward fielder B at an angle of 21° to the horizontal; the
initial position of the ball is 1.5 ft above ground level. Fielder B requires 0.47 sec to judge where the ball should be caught and begins
moving to that position with constant speed. Because of great experience, fielder B chooses his running speed so that he arrives at the
"catch position" simultaneously with the baseball. The catch position is the field location at which the ball altitude is 6.8 ft. Determine
the velocity of the ball relative to the fielder at the instant the catch is made.
121
1.5'
B
258'
Answer: VA/B = ( i
i+ i
j) ft/sec

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