39. mmh A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down.

39. mmh A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter2: One Dimensional Motion

Section: Chapter Questions

Problem 63PQ: A rock is thrown straight up into the air with an initial speed of 24 m/s at time t = 0. Ignore air...

See similar textbooks

Similar questions

At the Blue Jays game, R. A. Dickie (height = 1.2m) throws a baseball straight in the air ( 140g) with 95N of force for 30cm. a. What is the speed of the ball 2.4 m above the ground? bWhat is the maximum height of the ball (assuming no air resistance)?
A worker at the top of a 425-m-tall television transmitting tower accidentally drops a heavy tool. If air resistance is negligible, how fast (in m/s) is the tool going just before it hits the ground?
9: An archer fires an arrow straight up into the air with a speed v0=35.6m/s. Neglect air resistance. a. Find the maximum height, hℎ, in meters, reached by the arrow. b. In terms of known quantities, write an expression for the time the arrow is in the air until it returns to launch height.
A stone is thrown with an initial speed of 15m/s at an angle of 53° above the horizontal from the top of a 35m building. If g=9.8m/s^2 and air resistance is negligable, then what is the speed of the rock as it hits the ground?
A rock is thrown from a cliff and lands 20.2 m from the base of the cliff, and it was thrown horizontally with a speed of 12.7 m/s. a.) How tall is the cliff?
A student at the top of a building of height h throws one ball upward with a speed of i and then throws a second ball downward with the same initial speed i. Just before it reaches the ground, is the final speed of the ball thrown upward (a) larger, (b) smaller, or (c) the same in magnitude, compared with the final speed of the ball thrown downward?
A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls through a vertical distance of 3.20 m before landing. Neglecting air resistance, (a) how long does it take the skier to reach the ground? (b) How far horizontally docs the skier travel in the air before landing? (Sec Section 3.4.)
A rock is thrown straight up into the air with an initial speed of 24 m/s at time t = 0. Ignore air resistance in this problem. At what times does it move with a speed of 12 m/s? Note: There are two answers to this problem.
The known elevations of the ski jumping hill shown below are as follows: hB = 1.2 mhC = 6.4 m If a ski jumper starts from rest at position A, what elevation (in m) is required at position A to ensure that she reaches a minimum launch velocity of 27.1 m/s at position C ?
A truck travels from point M northward for 56 min then eastward for one hour, then shifted N 30° W. If the constant speed is 40 Kph, how far directly from M, in km. will be it after 2 hours?
A long jumper leaves the ground at an angle of 20.0° above the horizontal and at a speed of 11.0 m/san . How far does he jump in the horizontal direction?
A rock is thrown off a vertical cliff at an angle of 44.5o above horizontal. The cliff is 75.7 m high and the ground extends horizontally from the base. The initial speed of the rock is 18.4 m/s. Neglect air resistance. E: How high above the ground, in meters, is the rock 2.42 s before it hits the ground? F: How far horizontally from the cliff, in meters, is the rock 2.42 s before it hits the ground?