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ID: 1432145 • Letter: X
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x www.Saplinglearning x www.Saplinglearning x www.saplinglearning x www.Saplinglearning. x University of Colorad php?id 2536983 WWW pling learning.com/lbiscms/mo Sapling University of Colorado, Denver PHYS 2010-003 Spring16- DHUNGANA Sapling Learning Activities and Due Dates My Assignment 3/8/2016 09:00 AM A 37.5/100 Gradebook Attempts score c 00 Question 6 of 8 Map UNIVERSITY PHYSICS An average froghopper insect has a mass of 12.2 mg and jumps to a maximum height of 318 mm when its takeoff ang is 54.00 above the horizontal. Find the takeoff speed of the froghopper. 00 00 How much kinetic energy did the froghopper generate for this jump? Express your answer in microjoules. HJ How much energy per unit body mass was required for the jump? Express your answer in joules per kilogram of body mass. DIE Previous Check Answer Next Jump to Resources Assignment Information Available From: Not Set 3/8/2016 09:00 AM Due Date: Points Possible 00 Grade Category: Graded Description: Policies: Weekly T You can check your answers You can view solutions after the due date You have three attempts per question. You lose 15% of the points available to each answer in your question for each incorrect attempt at that answer For multiple-choice questions, the penalty depends on the number of choices available. Textbook O Help With This Topic O Web Help & Videos O Technical Support and Bug Reports 7:26 PM /7/2016Explanation / Answer
for projectile,
maximum height = (Vo * sin thetha)^2 /2g
318*10^-3 = (Vo* sin 54)^2 / (2*9.8)
Vo = 3.09 m/s
Answer: 3.09 m/s
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KE = 0.5*m*Vo^2
= 0.5*(112*10^-6 Kg)*(3.09)^2
= 5.35*10^-4 J
Answer: 535 micro J
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KE/mass = 5.35*10^-4 J / (112*10^-6 Kg)
= 4.78 J/Kg
Answer: 4.78 J/Kg
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