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A rock is tossed straight up with a speed of 20 m/s. When
Chapter 2, Problem 20E(choose chapter or problem)
Problem 20E
A rock is tossed straight up with a speed of 20 m/s. When it returns, it falls into a hole 10 m deep.
a. What is the rock’s velocity as it hits the bottom of the hole?
b. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
Questions & Answers
QUESTION:
Problem 20E
A rock is tossed straight up with a speed of 20 m/s. When it returns, it falls into a hole 10 m deep.
a. What is the rock’s velocity as it hits the bottom of the hole?
b. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
ANSWER:
Step 1 of 4
The objective here is to first determine the final velocity of a rock, when it hits the bottom of a hole whose depth is given. Further, we need to determine the time interval for which the rock is in the air, from the instant of release till it comes to rest.