Some children standing on top of a cliff 500 m high dropped a large stone from rest. a. How long was the stone in the air before it hit the ground? b. What was the velocity of the stone as it hit the ground?

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter3: Accelerated Motion
Section: Chapter Questions
Problem 89A
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Activity 9.1
Free-fall Problems
Solve the following problems involving free-fall motion.
1. Some children standing on top of a cliff 500 m high dropped a large stone from
rest.
a. How long was the stone in the air before it hit the ground?
b. What was the velocity of the stone as it hit the ground?
2. A person throws a ball upward into the air with an initial velocity of 15 m/s.
Calculate how high it goes and how long is the ball in the air before it comes
back to the hand. Ignore air resistance.
Transcribed Image Text:Activity 9.1 Free-fall Problems Solve the following problems involving free-fall motion. 1. Some children standing on top of a cliff 500 m high dropped a large stone from rest. a. How long was the stone in the air before it hit the ground? b. What was the velocity of the stone as it hit the ground? 2. A person throws a ball upward into the air with an initial velocity of 15 m/s. Calculate how high it goes and how long is the ball in the air before it comes back to the hand. Ignore air resistance.
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