Just before it is struck by a racket, a tennis ball weighing 0.560 has a velocit
ID: 2163790 • Letter: J
Question
Just before it is struck by a racket, a tennis ball weighing 0.560 has a velocity of (20m/s)i -(4m/s)j. During the 3.00ms that the racket and ball are in contact, the net force on the ball is constant and equal to -(380N)i +(110N)j .What is the x-component of the impulse of the net force applied to the ball?
What is the -component of the impulse of the net force applied to the ball?
What is the -component of the final velocity of the ball?
What is the -component of the final velocity of the ball?
Explanation / Answer
A is -380*3/1000 B is 110*3/1000 C is 20-1.14/(0.56/9.81) D is -4+0.33/(0.56/9.81) where 0.56/9.81 is the mass of the ball, 9.81=accn due to gravity
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