A tennis ball is hit into the air and moves along an arc. (a) Neglecting air res
ID: 1665633 • Letter: A
Question
A tennis ball is hit into the air and moves along an arc. (a) Neglecting air resistance, where along thearc is the speed of the ball a minimum? (Select all that apply.) 1 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotionJustify your answer.
2
(b) Neglecting airresistance, where along the arc is the speed of the ball a maximum?(Select all that apply.) 3 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion
Justify your answer.
4 (a) Neglecting air resistance, where along thearc is the speed of the ball a minimum? (Select all that apply.) 1 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion
Justify your answer.
2
(b) Neglecting airresistance, where along the arc is the speed of the ball a maximum?(Select all that apply.) 3 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion
Justify your answer.
4 1 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion 1 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion 1 3 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion 3 at the initial position ofmotion at the highest point in thetrajectory at the final position ofmotion 3
Explanation / Answer
a) at the highest point of the motion, the velocity is minimum. at all point, the horizontal velocity is unchanged, so for thetotal velocity is minumum , the vertical velocity must be zero. b) similar to part a, now the vertical velocity must be maximum,since it is decrease when it fly up, and increase back when it flydown, the maximum should be at the initial and the end.
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