Please only answer part 4 of 9. acceleration; therefore, the height is greatest here.""For this 90° angle, the horizontal component of velocity is zero, so the initial velocity iscompletely in the vertical direction, resulting in greatest height.""For this angle, the vertical component of velocity is zero, so the initial velocity is purely in thehorizontal direction."Abel is correct. As Abel recognized, the initial velocity is entirely in the vertical direction for a 90° launch, so theheight of the tennis ball is greatest for a launch angle of 90°.Part 3 of 9 - Maximum HeightAbel challenges Kato to use the equation for the time for any projectile to reach maximum height in theabsence of air resistance, given by tymax = V, sin o, and the kinematic equation y, = Y, + v,(sin 0pt -gt,to determine the maximum height, h, of the tennis ball, given the initial launch angle and speed. Which ofKato's attempts is correct?v? sin? 0,| Kato tries substituting tymax for t, 0 for Y, and h for yp and gets h =2gKato says that it is not at all possible to determine the maximum height of a tennis ball using theseequations.Kato tries substituting 2ty,maxv? sin? o,for t, 0 for y, and h for y, and gets h =v,? sin? o,Kato tries substituting ty,max for t, 0 for y, and h for y, and gets h =Kato is correct. This equation can be used to determine the maximum height of a tennis ball in the absence of airresistance, given the initial velocity and launch angle. When Kato made her substitutions, she goth = v,(sin ê)t - gty.max)², which using ty,max = V; sind, gave herh= v(sin e)( sin )-, sin 0,)°. simplifying this, she got h =("; sinv?(sin? 0) _ v?(sin? 0),which2greduced to this result.Part 4 of 9 - Maximum HeightAbel is not sure why, from h = Vi sin- ",, the height the tennis ball reaches is maximum when 0, = 90°, and29asks Kato to explain. Which of Kato's responses is correct?O "When 0, = 90°, sin? 0, = sin(20,) = 1, which is its maximum value, so h is maximum."O "When 0, = 90°, sin? 0, is maximum, so h is maximum.""When 0, = 90°, sin? 0, is minimum, so h is maximum.""When 0, = 90°, sin 0, = 1, sin? 0, = 2·1 = 2, which is its maximum value, so that means h is%3Dmaximum." Kato and Abel are tennis partners, and are also in the same physics class. They are playing around with thetennis ball machine, which launches tennis balls at an initial speed of 30 m/s. Kato wonders how high and howfar 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. Katoand Abel can use the slider to set the launch angle or enter an angle value by clicking inside the degrees boxand then clicking "fire" to set the projectile in motion. They can move the mouse pointer to see readouts ofthe x- and y-coordinates for any point on the curve. They can click "pause" to stop the simulation at any pointand "clear" to remove traces of the projectile paths. Note that in this simulation, air resistance is ignored.y (m)75zy =30 m/s5025* (m)255075100125Launch Angle50degrees9075- 60453015Time =0.00 sfirepauseclearClick here to open the simulation in a new window.Part 1 of 9 - Maximum HeightKato runs the pitching machine for several different angles, and she and Abel watch carefully to see whatangle results in the greatest height. What angle do they find?| 90°45°15°30°They are correct. When the launch angle is 90°, the projectile reaches its greatest height.

Here, For angle = 90 So, the sin90 = 1 At 90° sin function is maximum. Hence , At 90° height is…

h = v{sin 8;)t –g(ty,max), which using ty,max gave her n = v (sin )(ain .) - san .)*. simpliying this, she got h =, v?(sin? 0) _ v(sin? 0,). which 2g reduced to this result. Part 4 of 9 - Maximum Height Abel is not sure why, from h = v? sin2 0, the height the tennis ball reaches is maximum when 0, = 90°, and 2g asks Kato to explain. Which of Kato's responses is correct? O "When 0, = 90°, sin? 0, = sin(20,) = 1, which is its maximum value, so h is maximum." "When 0, = 90°, sin? e, is maximum, so h is maximum." "When e, = 90°, sin 0, is minimum, soh is maximum."

h = v{sin 8;)t –g(ty,max), which using ty,max gave her n = v (sin )(ain .) - san .)*. simpliying this, she got h =, v?(sin? 0) _ v(sin? 0,). which 2g reduced to this result. Part 4 of 9 - Maximum Height Abel is not sure why, from h = v? sin2 0, the height the tennis ball reaches is maximum when 0, = 90°, and 2g asks Kato to explain. Which of Kato's responses is correct? O "When 0, = 90°, sin? 0, = sin(20,) = 1, which is its maximum value, so h is maximum." "When 0, = 90°, sin? e, is maximum, so h is maximum." "When e, = 90°, sin 0, is minimum, soh is maximum."