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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

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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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
Transcribed Image Text: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
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