To calculate: The minimum initial vertical velocity
Answer to Problem 75E
The required minimum initial velocity is 24.66 feet per second.
Explanation of Solution
Given information:
The height of the tree
Height of the weight at which it is released
The given height of the tree that is,
To find the minimum initial vertical velocity
Substitute 15 for h , 5.5 for
To solve the above equation, use the discriminant rule.
The discriminant of the above quadratic equation has one real solution; if the discriminant is zero.
Take square root on each side of the above equation.
But, the velocity cannot be negative.
So,
Hence, the required minimum initial velocity is 24.66 feet per second.
Chapter 9 Solutions
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