Concept explainers
The velocity of the ball when it hits the sidewalk.
Answer to Problem 74A
Explanation of Solution
Given:
A ball is thrown from a window
Formula used:
Final velocity with constant acceleration can be obtained by:
Where,
The distance traveled by an object with a constant acceleration can be obtained by:
Here, d represents displacement, v represents velocity, t represents time and a is the acceleration.
Calculation:
Acceleration acting on the ball will be due to gravity only. Thus,
Now, using the above mentioned formula for the distance covered, the time elapsed of the motion will be
Then, the final velocity of the ball will be:
Conclusion:
Thus, the final velocity of the ball when it hits the sidewalk is
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Glencoe Physics: Principles and Problems, Student Edition
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