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. P Pandora Radio-Listen tx cure https://session.masteringphysics.com/myct/mastering/assignment/list/5862639 MasteringPhysics work and Kinetic Energy . Google Chrome Secure https//session.masteringphysics.com/myct/itemView?assignmentProblemID-87499303 Work and Kinetic EnProblem 9.55 Problem 9.55 Part A A 55 g rock is placed in a slingshot and the rubber band is stretched. The magnitude of the force of the rubber band on the rock is shown by the graph in (Figure 1) The rubber band is stretched 20 em and then released What is the speed of the rock? Express your answer with the appropriate units u| Value ll Units |Figure 1- rofl Submit My Answers Give Up Fsp (N) 60- 40 20 r (cm) 0 10 2030

Explanation / Answer

Energy stored in slingshot = 0.5*40*0.2=4 Joules

mass of rock = 50 gm=0.055 kg

kinetic energy imparted to rock = 4 Joules

Let speed be b

0.5*0.055*v2=4

v = 12.06 m/s

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