Concept explainers
(a)
The speed of the ball at time
(a)
Answer to Problem 27P
The speed of the ball at time
Explanation of Solution
Write the expression for horizontal component of speed.
Here,
Write the expression for vertical component of speed.
Here,
Write the expression for magnitude of speed.
Here,
Conclusion:
Substitute
Substitute
Substitute
Therefore, the speed of the ball at time
(b)
The angle
(b)
Answer to Problem 27P
The angle
Explanation of Solution
Write the expression for angle
Rearrange the above equation.
Conclusion:
Substitute
Therefore, the angle
(c)
The value of time
(c)
Answer to Problem 27P
The value of time
Explanation of Solution
Write the expression for vertical component of speed.
Here,
Rearrange the above equation, to find
Conclusion:
Substitute
Therefore, The value of time
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Chapter 4 Solutions
College Physics
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