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Dec 6, 2023

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11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 1/6 Projectile Motion- Part 1 Quiz Student: Canakapalli, Nityasiri Course: Physics A Honors (FA23) AZ 1 - 2023-2024 Questions 1. Darren throws a stone upward. The stone takes 4.40 seconds to reach the ground again. At what time after Darren throws the stone will the stone have a vertical velocity of 0 meters per second? Vertical velocity is zero at the peak of the trajectory. The peak occurs at the half-way point of the trajectory. never 2.20 s 4.40 s 0.00 s / 1 0 Points
11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 2/6 2. A ball is launched with an initial velocity of 44.1 meters per second, at an angle of above horizontal. At the peak of its trajectory, what are the components of the ball's velocity vector? Correct While horizontal velocity is constant during projectile motion, vertical velocity is equal to 0 meters per second at the peak of the trajectory. , , , , / 1 1 Points 3. Projectile motion is a combination of _______________ motion in the horizontal direction, and ________________ motion in the vertical direction. Correct Vertical and horizontal velocity are independent in projectile motion, and only vertical velocity is affected by gravity. constant, constant accelerated, accelerated accelerated, constant constant, accelerated / 1 1 Points
11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 3/6 4. If a water balloon is launched with an initial velocity of 30.1 meters per second, at an angle of above horizontal, how much time will it take the balloon to reach the ground again? 4.24 s 2.31 s 2.45 s 4.10 s / 1 0 Points 5. A tennis ball is launched horizontally at a speed of 24.4 meters per second, and at a height of 2.10 meters above the ground. How long will it take for the tennis ball to reach the ground? Correct Remember that vertical velocity and horizontal velocity are independent, so vertical velocity does not impact fall time. 0.551 s 2.49 s 0.654 s 5.06 s / 1 1 Points
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11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 4/6 6. Gabriel kicks a soccer ball so that it has an initial velocity 22 meters per second, at an angle of above the ground. How much time does it take for the soccer ball to reach its maximum height? Correct 2.16 s 0.62 s 2.24 s 0.77 s / 1 1 Points 7. When a projectile is released, what angle of initial velocity will achieve the greatest range? Correct If starting form the ground, totally horizontal projectile motion and totally vertical projectile motion both have a range of 0 meters. Maximum range occurs half-way between those values. 30 degrees 15 degrees 45 degrees 60 degrees / 1 1 Points
11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 5/6 8. A soccer ball is kicked with an initial velocity of 18.0 meters per second, at an angle of above horizontal. What is the horizontal component of the velocity vector when the ball is landing on the ground again? Correct The horizontal component of velocity remains constant during projectile motion. 16.4 m/s 7.32 m/s -7.32 m/s -16.4 m/s / 1 1 Points 9. A ball is launched with an initial velocity of 44.1 meters per second, at an angle of above horizontal. When the ball reaches the ground again, what is its velocity vector? While horizontal velocity is constant during projectile motion, vertical velocity is changed by the acceleration of gravity. , , , , / 1 0 Points
11/1/23, 11:52 PM ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false https://ssi.agilixbuzz.com/student/200011839/gradebook/grade-details/3aff12c7ee764fdc89fbf103a92d1bef?hideItemLink=false 6/6 10. Gabriel kicks a soccer ball with an initial velocity 22 meters per second, at an angle of above the ground. What is the vertical component of the initial velocity? Correct The initial vertical velocity will be in the positive direction. Draw a right triangle with a hypotenuse of 22 to solve for the vertical velocity. -21 m/s 21 m/s -6.1 m/s 6.1 m/s / 1 1 Points
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