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1. A bird on a pond gets airborne by flapping its wings and running on top of the water. (a) If the bird must reach a velocity of 7.50 m/s to take off and accelerates from rest at an average rate of 0.225 m/s", how far will it travel before becoming airborne? (b) How long does this take?

1. A bird on a pond gets airborne by flapping its wings and running on top of the water. (a) If the bird must reach a velocity of 7.50 m/s to take off and accelerates from rest at an average rate of 0.225 m/s", how far will it travel before becoming airborne? (b) How long does this take?

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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Part II. Problem Solving. Solve the following problems as detailed as you can. Your final answers must be in SI units, rounded off to at least 2 decimal places. 1. A bird on a pond gets airborne by flapping its wings and running on top of the water. (a) If the bird must reach a velocity of 7.50 m/s to take off and accelerates from rest at an average rate of 0.225 m/s, how far will it travel before becoming airborne? (b) How long does this take? 2. An athlete suspends himself from the lower end of a hanging rope, whose upper end is attached to the ceiling. (a) Draw the free-body diagram for the forces acting on the athlete. (b) Draw the free-body diagram for the forces acting on the rope. (c) What is the weight of the athlete if the athlete has a mass of m = 65 kg? (d) If the rope has a negligible mass, what is the tension at the top of the rope? Useful equations: For Kinematics, I =ro + vot +5azt I =Io + 글%3+2a (z-Io) For Dynamics, >F, =ma, EF, =ma, w =mg
Transcribed Image Text:Part II. Problem Solving. Solve the following problems as detailed as you can. Your final answers must be in SI units, rounded off to at least 2 decimal places. 1. A bird on a pond gets airborne by flapping its wings and running on top of the water. (a) If the bird must reach a velocity of 7.50 m/s to take off and accelerates from rest at an average rate of 0.225 m/s, how far will it travel before becoming airborne? (b) How long does this take? 2. An athlete suspends himself from the lower end of a hanging rope, whose upper end is attached to the ceiling. (a) Draw the free-body diagram for the forces acting on the athlete. (b) Draw the free-body diagram for the forces acting on the rope. (c) What is the weight of the athlete if the athlete has a mass of m = 65 kg? (d) If the rope has a negligible mass, what is the tension at the top of the rope? Useful equations: For Kinematics, I =ro + vot +5azt I =Io + 글%3+2a (z-Io) For Dynamics, >F, =ma, EF, =ma, w =mg
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