Concept explainers
Kenny Klutz drops his physics book off his aunt’s high-rise balcony. It hits the ground below 1.5 s later.
a. With what speed does it
b. How high is the balcony? Ignore air drag.
a.
The speed with which the physics book hits the ground below
Answer to Problem 56A
Explanation of Solution
Given:
The time taken,
Formula used:
The instantaneous speed in free fall at a time
where,
Calculation:
Using the above mentioned formula and given value, the speed with which the physics book hit the ground below will be,
Conclusion:
Hence, the speed with which the physics book hits the ground below is
b.
The height of the balcony above the ground.
Answer to Problem 56A
Explanation of Solution
Given:
The time taken,
Formula used:
The distance covered in free fall in a time
where,
Calculation:
Using the above mentioned formula and given value, the height of the balcony above the ground will be,
Conclusion:
Hence, the height of the balcony is
Chapter 4 Solutions
Conceptual Physics: The High School Physics Program
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