saplinglearning.com French Montana-Moses ft. Chris Brown.... H) University of Me
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saplinglearning.com French Montana-Moses ft. Chris Brown.... H) University of Memphis PHYS 2010 Sprin www.saplinglearning.com/ibisloss/Accessi... m/ibis/css/Ac Sapling gout Help Sapling Learning University of Memphis PHYS 2010 Spring16 FRANCESCHETTI Activities and Due Dates HW: 2D Kinematics My Assignment Resources Attempts Score 2/15/2016 06:00 PM A 78.4/100 Assignment Information Gradebook Periodic Table Available From 2/3/2016 06:00 AM 98 Qu on 8 of 10 2/15/2016 06:00 PM Due Date: 00 Map Allowed with 10% of the Late submissions points possible deducted per 00 day until Pool players often pride the selves on their ability to impart a large speed to a pool ba n the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed 02/25/2016 06:00 PM of their break shots (the opening shot of a game in which the player strikes a ball with his pool cue). With the 00 rail removed, a ball can fly off the table. As the only participant with a physics background, they have placed Points Possible 100 you in charge of determining the speed of the players' break shots 97 Grade Category: Graded 00 Description: 0.910 m Policies: Homework 95 3,75 m You can check your answers The top of the pool table is 0.910 m from e floor. The placement of the tape is such that 0 m is aligned with You can view solutions when you complete or give the edge of the table (as shown). The winner of the competition wants to know if he has broken the world up on any question record for the break shot of 32 mph (about 14.3 m/s If the winners ball landed a distance 3.75 m from the table edge, calculate his break shot speed. You can keep trying to answer each question until 95 you get it right or give up Number You lose 5% of the points available to each answer on for each incorrect attempt at that n your que ansWe At what speed did his pool ball hit the ground? O eTextbook Number O Help With This Topic Previous Next Give Up & View Solut Check Answer Exit Hint Web Help & Videos O Technical Support and Bug Reports 2016 Sapling Le 47 privacy policyExplanation / Answer
a) let t is the time taken for he ball to hit the ground.
h = 0.91 m
Apply, -h = voy*t - 0.5*g*t^2
-h = - 0.5*g*t^2 (since voy = 0)
t = sqrt(2*h/g)
= sqrt(2*0.91/9.8)
= 0.431 s
so, vox = x/t
= 3.75/0.431
= 8.7 m/s <<<<<<<<--------------Answer
b) let vx and vy are the component of velocite when the ball hits the ground.
vx =vox = 8.7 m/s
vy = voy - g*t
= 0 - 9.8*0.431
= -4.22 m/s
so, v = sqrt(vx^2+ vy^2)
= sqrt(8.7^2 + 4.22^2)
= 9.67 m/s <<<<<<<<--------------Answer