A small mailbag is released from a helicopter that is descending steadily at 1.50 m/s. (a) After 2.00 s, what is the speed of the mailbag? -21.1 The response you submitted has the wrong sign. m/s (b) How far is it below the helicopter? 19.6 (c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.50 m/s? 19.6 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m/s 18.1 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m

A small mailbag is released from a helicopter that is descending steadily at 1.50 m/s. (a) After 2.00 s, what is the speed of the mailbag? -21.1 The response you submitted has the wrong sign. m/s (b) How far is it below the helicopter? 19.6 (c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.50 m/s? 19.6 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m/s 18.1 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 56P: Why is the following situation impossible? A freight train is lumbering along at a constant speed of...

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Why is the following situation impossible? A freight train is lumbering along at a constant speed of 16.0 m/s. Behind the freight train on the same track is a passenger train traveling in the same direction at 40.0 m/s. When the front of the passenger train is 58.5 m from the back of the freight train, the engineer on the passenger train recognizes the danger and hits the brakes of his train, causing the train to move with acceleration 3.00 m/s2. Because of the engineers action, the trains do not collide.
A very strong, but inept, shot putter puts the shot straight up vertically with an initial velocity of 11.0 m/s. How long does he have to get out of the way if the shot was released at a height of 2.20 m, and he is 1.80 m tall?
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You are on the roof of a Physics Building, 21 m above the ground. Your physics professor, who is 1.71 m tall, is approaching the building at constant speed of 2.04 m/s. If you wish to drop an egg on his head, how far should your professor be when you release the egg?
A jetliner travelling northward is landing with a speed of 69m/s . Once the jet touches down it has 750 m of runway in which to reduce its speed to 6.1m/s. Calculate the average acceleration of the plane during the landing . And IF identical pellet guns are fired simultaneously from the edge of a cliff. These guns impart an initial speed of 30.0m/s to each pellet. Gun A is fired straight upwards, with the pellet going up and the n falling back down, eventually hitting the ground beneath the cliff. Gun B is fired straight downwards. In the absence of air resistance, Calculate how long after pellet B hits the ground does pellet A hit the ground?
A helicopter is ascending vertically with a speed of 5.40m/s at a height of 105m above the earth, a package is dropped from the helicopter. How much time does it take for the package to reach the ground? (Hint: What is Vo for the package?)
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A group of students celebrate their first year of medical school with a hot-air balloon ride, which is rising upward with a constant speed of 3.0 m/s. When the balloon is 3.50 m above the ground, one of the students who is taking a selfie with the other students accidentally drops her smart phone over the side of the balloon (fortunately with a OtterBox case). With what speed would the phone hit the ground in m/s? Note that the displacement of the phone dropping 3.50 m would be - 3.50 m. For the same situation as Question 9, how long in seconds would the smart phone be in the air before it hits the ground?
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