7. 2.4 Playground Ball 4 A playground is on the roof of a city school which is 10.1 m above the street (see figure below). The vertical wall of the school is h = 10.9 m above the ground, forming a 0.8 m railing around the playground. A student accidently knocked a ball onto the street below. A passerby returns it by kicking it at an angle of 0 = 65.0 deg to the ground d = 22.0 m from the wall. The ball takes t₁ = 2.6 s to reach a point directly above the front wall of the school. 10.9 m +y 65° +x 22 m Find the speed at which the ball was launched in m/s. (Please give your answer to one decimal place to reduce error in later questions) Enter answer here 8. 2.5 Trapeze 5 You are the receiver in a trapeze duo and you are practicing your timing. Your partner, the jumper, releases when his swing is at 45 deg so that he flies through the air at a speed of 3 m/s. You catch him at the top of his trajectory and when your swing is also at 45 deg. The swings are identical and follow the same trajectory from -45 deg to +45 deg. How much later must you begin your swing than your partner to complete the stunt? Plese give your answer in S. Enter answer here
7. 2.4 Playground Ball 4 A playground is on the roof of a city school which is 10.1 m above the street (see figure below). The vertical wall of the school is h = 10.9 m above the ground, forming a 0.8 m railing around the playground. A student accidently knocked a ball onto the street below. A passerby returns it by kicking it at an angle of 0 = 65.0 deg to the ground d = 22.0 m from the wall. The ball takes t₁ = 2.6 s to reach a point directly above the front wall of the school. 10.9 m +y 65° +x 22 m Find the speed at which the ball was launched in m/s. (Please give your answer to one decimal place to reduce error in later questions) Enter answer here 8. 2.5 Trapeze 5 You are the receiver in a trapeze duo and you are practicing your timing. Your partner, the jumper, releases when his swing is at 45 deg so that he flies through the air at a speed of 3 m/s. You catch him at the top of his trajectory and when your swing is also at 45 deg. The swings are identical and follow the same trajectory from -45 deg to +45 deg. How much later must you begin your swing than your partner to complete the stunt? Plese give your answer in S. Enter answer here
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter3: Vectors
Section: Chapter Questions
Problem 42PQ: The same vectors that are shown in Figure P3.6 are shown in Figure P3.42. The magnitudes are F1 =...
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