Concept explainers
(a)
The time of his flight .
(a)
Answer to Problem 18P
The time of his flight is
Explanation of Solution
Write the expression for the vertical final velocity of the basketball player.
Here,
Write the expression for the time of flight,
Conclusion:
For upward flight,
Substitute
For downward flight,
Substitute
Substitute
Therefore, the time of his flight is
(b)
The horizontal velocity component of the basketball player at instant of take-off .
(b)
Answer to Problem 18P
The horizontal velocity component of the basketball player at instant of take-off is
Explanation of Solution
Write the total horizontal displacement of the basketball player,
Here,
Conclusion:
Substitute
Therefore, the horizontal velocity component of the basketball player at instant of take-off is
(c)
The vertical velocity component of the basketball player at instant of take-off .
(c)
Answer to Problem 18P
The vertical velocity component of the basketball player at instant of take-off is
Explanation of Solution
From part (a), for upward flight,
Write the expression for the vertical final velocity of the basketball player.
Here,
Conclusion:
For upward flight,
Substitute
Therefore, the vertical velocity component of the basketball player at instant of take-off is
(d)
The take-off angle of the basketball player .
(d)
Answer to Problem 18P
The take-off angle of the basketball player is
Explanation of Solution
Write the take-off angle of the basketball player,
Here,
Conclusion:
Substitute
Therefore, the take-off angle of the basketball player is
(e)
The flight time of the whitetail deer .
(e)
Answer to Problem 18P
The flight time of the whitetail deer is
Explanation of Solution
From part (a),
Write the expression for the vertical final velocity of the basketball player.
Here,
Write the expression for the flight time of the whitetail deer,
Here,
Conclusion:
For upward flight,
Substitute
For downward flight,
Substitute
Substitute
Therefore, the flight time of the whitetail deer is
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Chapter 3 Solutions
Principles of Physics
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