Given launch velocity,
Vertical launch velocity,
Horizontal launch velocity,
A) At what two times in the baseball at a height of 10.6 m above the point at which it left the bat?
Consider the vertical motion of the ball
Use formula
Solve the quadratic equation using a calculator
ANSWER :
and
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B) Calculate the horizontal component of the baseball’s velocity at an earlier time calculated in A.
Consider the horizontal motion of the ball.
There is no acceleration in horizontal direction ,so horizontal velocity remains constant.
ANSWER :
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C) Calculate the vertical component of the baseball’s velocity at an earlier time calculated in A.
Consider vertical motion of the ball
Use formula
ANSWER :
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D) Calculate the horizontal component of the baseball’s velocity at a later time calculated in A.
Consider the horizontal motion of the ball.
There is no acceleration in horizontal direction ,so horizontal velocity remains constant.
ANSWER :
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E) Calculate the vertical component of the baseball’s velocity at a later time calculated in A.
Consider vertical motion of the ball
Use formula
At max height vertical velocity becomes zero.
ANSWER :
Negative sign indicates downwards direction
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F) What is the magnitude of the baseball’s velocity when it returns to the level at which it left the bat?
Consider the horizontal motion of the ball.
There is no acceleration in horizontal direction ,so horizontal velocity remains constant.
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Consider vertical motion of the ball
Consider rising part
Use formula
Consider falling part
Use formula
downwards
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Magnitude,
ANSWER :
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G) what is the direction of the baseball’s velocity when it returns to the level at which it left the bat?
Direction
ANSWER :
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You can ignore air resistance.
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