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Solved: Just before it is struck by a racket, a tennis
Chapter 8, Problem 8.69(choose chapter or problem)
Just before it is struck by a racket, a tennis ball weighing 0.560 N has a velocity of \((20.0 \mathrm{~m} / \mathrm{s}) \hat{\boldsymbol{\imath}}-(4.0 \mathrm{~m} / \mathrm{s}) \hat{\boldsymbol{\jmath}}\). During the 3.00 ms that the racket and ball are in contact, the net force on the ball is constant and equal to \(-(380 \mathrm{~N}) \hat{\boldsymbol{\imath}}+(110 \mathrm{~N}) \hat{\boldsymbol{\jmath}}\).
(a) What are the x- and y-components of the impulse of the net force applied to the ball?
(b) What are the x- and y-components of the final velocity of the ball?
Questions & Answers
QUESTION:
Just before it is struck by a racket, a tennis ball weighing 0.560 N has a velocity of \((20.0 \mathrm{~m} / \mathrm{s}) \hat{\boldsymbol{\imath}}-(4.0 \mathrm{~m} / \mathrm{s}) \hat{\boldsymbol{\jmath}}\). During the 3.00 ms that the racket and ball are in contact, the net force on the ball is constant and equal to \(-(380 \mathrm{~N}) \hat{\boldsymbol{\imath}}+(110 \mathrm{~N}) \hat{\boldsymbol{\jmath}}\).
(a) What are the x- and y-components of the impulse of the net force applied to the ball?
(b) What are the x- and y-components of the final velocity of the ball?
ANSWER:Step 1 of 3
The relation between impulse force and change in velocity is given by