If an object is initially moving with a constant velocity of 20 m/s towards positive x-axis and after 5 seconds, it changes its direction and moving at an angle of 30o with the x-axis, find the magnitude and direction of its acceleration.

If an object is initially moving with a constant velocity of 20 m/s towards positive x-axis and after 5 seconds, it changes its direction and moving at an angle of 30o with the x-axis, find the magnitude and direction of its acceleration.

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 3P: A particle initially located at the origin has an acceleration of a=3.00jm/s2 and an initial...

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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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If an object is initially moving with a constant velocity of 20 m/s towards positive x-axis and after 5 seconds, it changes its direction and moving at an angle of 30^o with the x-axis, find the magnitude and direction of its acceleration.

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