Concept explainers
(a)
The distance covered by the ball when they hit directly upward, and the time to which the ball stays in the air.
(a)

Answer to Problem 26P
The distance covered by the ball when they hit directly upward is
Explanation of Solution
Write the expression for time of projectile to which it reaches the maximum height.
Here,
Write the expression for maximum vertical distance covered by the ball from the ground level.
Here,
Use equation (I) in (II).
Write the expression for end of trajectory.
Here,
Solve the equation (IV).
Conclusion:
Substitute,
Substitute,
Therefore, the distance covered by the ball when they hit directly upward is
(b)
The distance covered by the ball when they hit at an angle of
(b)

Answer to Problem 26P
The distance covered by the ball when they hit at an angle of
Explanation of Solution
Conclusion:
Substitute,
Substitute,
Therefore, the distance covered by the ball when they hit at an angle of
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