|A ball is dropped from a lookout 180 metres high. At the same time, a stone is fired vertically upwards from the valley floor with speed V m/s. Take g = a Find for what values of V a collision in the air will occur. Find, in terms of V, the time and the height when collision occurs, and prove that the collision speed is V m/s. b Find the value of V for which they collide halfway up the cliff, and the time taken. 10 m/s'.

|A ball is dropped from a lookout 180 metres high. At the same time, a stone is fired vertically upwards from the valley floor with speed V m/s. Take g = a Find for what values of V a collision in the air will occur. Find, in terms of V, the time and the height when collision occurs, and prove that the collision speed is V m/s. b Find the value of V for which they collide halfway up the cliff, and the time taken. 10 m/s'.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

|A ball is dropped from a lookout 180 metres high. At the same time, a stone is fired vertically upwards
from the valley floor with speed V m/s. Take g =
a Find for what values of V a collision in the air will occur. Find, in terms of V, the time and the height
when collision occurs, and prove that the collision speed is V m/s.
b Find the value of V for which they collide halfway up the cliff, and the time taken.
10 m/s'.

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