irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?
irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 10P: The magnitude of the net force exerted in the x direction on a 2.50-kg particle varies in time as...
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irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?
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