A sphere is fired downwards into a medium with an initial specd of 27 m/s. If it experiences a deceleration of a= (-6t) m/s", where t is in seconds, determine the time in seconds when v = 0.

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A sphere is fired downwards into a medium with an initial speed of 27 m/s. If it experiences a deceleration of a = (-6t) m/s", where t is in seconds, determine the time in seconds when v = 0.

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter1: Measurement

Section: Chapter Questions

Problem 26SA

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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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A sphere is fired downwards into a medium with an initial specd of 27 m/s. If it experiences a deceleration of a
= (-6t) m/s", where t is in seconds, determine the time in seconds when v = 0.

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