Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 2, Problem 31P
To determine
The initial velocity of the second rock which reach the ground same as first rock.
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A rock is dropped from a treetop 19.6 m high, and then, 1.00 s later, a second rock is thrown down. With what initial velocity must the second rock be thrown if it is to reach the ground at the same time as the first?
In Italy it is customary to throw furniture out the window to ring in the New Year to “let go of past sorrows for a more hopeful time”. You drop a couch from a height of 75.0m. A chair is thrown down from the same height 0.091s later. If both pieces of furniture hit the ground at the same time what was the initial velocity of the chair?
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Chapter 2 Solutions
Physics Fundamentals
Ch. 2 - Prob. 1QCh. 2 - Prob. 2QCh. 2 - Prob. 3QCh. 2 - Prob. 4QCh. 2 - Prob. 5QCh. 2 - Prob. 6QCh. 2 - Prob. 7QCh. 2 - Prob. 8QCh. 2 - Prob. 9QCh. 2 - Prob. 1P
Ch. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55P
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- While sitting on a tree branch 10.0 m above the ground, you drop a chestnut. When the chestnut has fallen 2.5 m, you throw a second chestnut straight down. What initial speed must you give the second chestnut if they both reach the ground at the same time?arrow_forwardThe nearest grocery is 60m, east from your house. You are walking at 1.2 m/s for 15.0 s toward the grocery when it started to rain and when you ran back to your house to get an umbrella. It took you another 5.0s to go back to your house. You start walking again at 1.2 m/s until you reach the grocery. (a) What is your average speed? (b) what is your average velocity?arrow_forwardWhile standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.20 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant?arrow_forward
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- I submitted this question at 3:30 and have not seen an answer yet. A rocket engine can accelerate a rocket launched from rest vertically up with an acceleration of 20.0 m/s2. However, after 50.0 s of flight the engine fails. Ignore air resistance. What is the maximum height reached?arrow_forwardSmoky, the cat, is relaxing on the arm of a couch, 1m above the ground, when he is startled by something and jumps straight up in the air with an initial speed of 4 m/s. Coming down he missed the couch and lands on the ground. ( ignore air resistance) time to reach max height is .408 s max height is 1.816 m What is smoky's velocity just before he hits the ground? How long is Smoky in the air?arrow_forwardA person stands at the edge of a deck that is 40.0 m above the ground and throws a rock straight up that reaches a height of 15 m above the deck. a) With what velocity was it thrown? b)The rock mises the deck on the way down. With what velocity does it hit the ground?arrow_forward
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