A batter hits the baseball A with an initial velocity of vo= 108 ft/sec directly toward fielder B at an angle of 30° to the horizontal; the initial position of the ball is 2.2 ft above ground level. Fielder B requires 0.37 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 7.9 ft. Determine the velocity of the ball relative to the fielder at the instant the catch is made. VO 130° 2.2¹ Answer: VA/B = ( i 249' i + i j) ft/sec

A batter hits the baseball A with an initial velocity of vo= 108 ft/sec directly toward fielder B at an angle of 30° to the horizontal; the initial position of the ball is 2.2 ft above ground level. Fielder B requires 0.37 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 7.9 ft. Determine the velocity of the ball relative to the fielder at the instant the catch is made. VO 130° 2.2¹ Answer: VA/B = ( i 249' i + i j) ft/sec

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Friction

Friction is defined as the force that prevents any solid surface, any layer of fluid, or any kind of element or material from sliding.

Question

A batter hits the baseball A with an initial velocity of vo = 108 ft/sec directly toward fielder B at an angle of 30° to the horizontal; the
initial position of the ball is 2.2 ft above ground level. Fielder B requires 0.37 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 7.9 ft. Determine
the velocity of the ball relative to the fielder at the instant the catch is made.
Vo
130°
2.2¹
Answer: VA/B = (
i
249'
B
i+ i
j) ft/sec

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