Concept explainers
(a)
The time interval between the flights of the two balls.
(a)
Answer to Problem 74AP
The time interval between the flights of the two balls is
Explanation of Solution
Write the equation for time interval.
Here,
Write the expression from
Here,
Write the expression from kinematics for the second ball.
Here,
Conclusion:
Substitute
Consider only positive solution.
Substitute
Substitute
Thus, the time interval between the flights of the two balls is
(b)
The velocity of the balls when they strike the ground.
(b)
Answer to Problem 74AP
The velocity of the balls when they strike the ground is
Explanation of Solution
Write the equation velocity at which the ball 1 strikes the ground.
Here,
Write the equation velocity at which the ball 2 strikes the ground.
Here,
Conclusion:
Substitute
Substitute
Thus, the velocity of the balls when they strike the ground is
(c)
The distance between the balls.
(c)
Answer to Problem 74AP
The distance between the balls is
Explanation of Solution
Write the equation of the distance between the balls.
Here,
Rewrite the expression for the distance between the balls by using equation (II) and (III).
Conclusion:
Substitute
Thus, the distance between the balls is
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Chapter 2 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
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