Answered: 6. A cannonball launched at 100 m/s…

6. A cannonball launched at 100 m/s reaches a peak height of 127.55 m and reaches a distance of 883.70 m. (a.) What angle was it fired at? (b.} How long did it spend in the air?

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter10: Motion In A Noninertial Reference Frame

Section: Chapter Questions

Problem 10.18P

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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.

Question

6. A cannonball launched at 100 m/s reaches a peak height of 127.55 m and reaches a
distance of 883.70 m.
(a.) What angle was it fired at?
(b.} How long did it spend in the air?

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