A pirate ship is 506 m away from a fort that is being defended by artillery that is sea level. The defensive cannon is capable of firing a cannon ball at 95 m/s. At what angle(s) above horizontal can the cannon fire the cannon ball so that it will hit the pirate ship?

A pirate ship is 506 m away from a fort that is being defended by artillery that is sea level. The defensive cannon is capable of firing a cannon ball at 95 m/s. At what angle(s) above horizontal can the cannon fire the cannon ball so that it will hit the pirate ship?

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

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 9P

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

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