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Part 2 of - Masimum Height The friends find that a 90* launch angle produces the greatest tennis ball height for a given launch speed. Kato asks Abel why this is so. Which of Abel's responses is correct? O The harizontal companent of velocity determines the greatest height, and when the launch angle is 90, the horizontal component is maximum. That is why it is 90. O "When the launch angle is 90", no component of the velacity is maving against the gravitational acceleration; therefore, the height is greatest here. O For this 90* angle, the horizontal component of velocity is zero, so the initial velocity is completaly in the vertical direction, resulting in greatest height." O For this angle, the vertical component of velocity is zero, so the initial velocity is purely in the horizontal direction."

Part 2 of - Masimum Height The friends find that a 90* launch angle produces the greatest tennis ball height for a given launch speed. Kato asks Abel why this is so. Which of Abel's responses is correct? O The harizontal companent of velocity determines the greatest height, and when the launch angle is 90, the horizontal component is maximum. That is why it is 90. O "When the launch angle is 90", no component of the velacity is maving against the gravitational acceleration; therefore, the height is greatest here. O For this 90* angle, the horizontal component of velocity is zero, so the initial velocity is completaly in the vertical direction, resulting in greatest height." O For this angle, the vertical component of velocity is zero, so the initial velocity is purely in the horizontal direction."

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Prelecture Exploration: Position and Time in Projectile Motion Kato and Abel are tennis partners, and are also in the same physics dass. They are playing around with the tennis ball machine, which launches tennis bails at an initial speed of 30 m/s. Kato wonders how high and how far the tennis ball can go, and the pair decide to perform several experiments to find out. This simulation shows a projectile launched from the origin. The initial speed of the projectile is 30 m/s. Kato and Abel can use the slider to set the launch angle or enter an angle value by clicking inside the degrees box and then clicking "fire" to set the projectile in motion. They can move the mouse pointer to see readouts of the x- and y-coordinates for any point on the curve. They can click "pause" to stop the simulation at any point and "clear" to remove traces of the projectile paths. Note that in this simulation, air resistance is ignored. y (m) 75 -30 mls 25 im) 25 50 75 100 125 Launch Angle 50 degre 60 45 30 22 Time paa ckar Click here to open the simulation in a new window. Part 1 of - Maximum Height Kato runs the pitching machine for several different angles, and she and Abel watch carefully to see what angle results in the greatest height. What angle do they find? 90 O 45 O 15 O 30 They are correct. When the launch angle ia 90", the projectile reaches ita greateat height. Part 2 of 9- Maximum Height The friends find that a 90° launch angle produces the greatest tennis ball height for a given launch speed. Kato asks Abel why this is so. Which of Abel's responses is correct? O The horizontal component of velocity determines the greatest height, and when the launch angle is 90°, the horizontal component is maximum. That is why it is 90." O "When the launch angle is 90°, no component of the velocity is moving against the gravitational acceleration; therefore, the height is greatest here." O "For this 90 angle, the horizontal component of velocity is zero, so the initial velocity is completely in the vertical direction, resulting in greatest height." O "For this angle, the vertical component of velocity is zero, so the initial velocity is purely in the horizontal direction."
Transcribed Image Text:Prelecture Exploration: Position and Time in Projectile Motion Kato and Abel are tennis partners, and are also in the same physics dass. They are playing around with the tennis ball machine, which launches tennis bails at an initial speed of 30 m/s. Kato wonders how high and how far the tennis ball can go, and the pair decide to perform several experiments to find out. This simulation shows a projectile launched from the origin. The initial speed of the projectile is 30 m/s. Kato and Abel can use the slider to set the launch angle or enter an angle value by clicking inside the degrees box and then clicking "fire" to set the projectile in motion. They can move the mouse pointer to see readouts of the x- and y-coordinates for any point on the curve. They can click "pause" to stop the simulation at any point and "clear" to remove traces of the projectile paths. Note that in this simulation, air resistance is ignored. y (m) 75 -30 mls 25 im) 25 50 75 100 125 Launch Angle 50 degre 60 45 30 22 Time paa ckar Click here to open the simulation in a new window. Part 1 of - Maximum Height Kato runs the pitching machine for several different angles, and she and Abel watch carefully to see what angle results in the greatest height. What angle do they find? 90 O 45 O 15 O 30 They are correct. When the launch angle ia 90", the projectile reaches ita greateat height. Part 2 of 9- Maximum Height The friends find that a 90° launch angle produces the greatest tennis ball height for a given launch speed. Kato asks Abel why this is so. Which of Abel's responses is correct? O The horizontal component of velocity determines the greatest height, and when the launch angle is 90°, the horizontal component is maximum. That is why it is 90." O "When the launch angle is 90°, no component of the velocity is moving against the gravitational acceleration; therefore, the height is greatest here." O "For this 90 angle, the horizontal component of velocity is zero, so the initial velocity is completely in the vertical direction, resulting in greatest height." O "For this angle, the vertical component of velocity is zero, so the initial velocity is purely in the horizontal direction."
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