A body is projected upwards with a velocity of 30 m/s. Find (a) the time when its velocity will be 5 m/s ; (b) the time when it will be 20 metres above the point of projection and (c) the time when it will return to the point of projection. [Ans. 2:55 s : 0-76 sec or 5-36 s ; 6-12 s]

A body is projected upwards with a velocity of 30 m/s. Find (a) the time when its velocity will be 5 m/s ; (b) the time when it will be 20 metres above the point of projection and (c) the time when it will return to the point of projection. [Ans. 2:55 s : 0-76 sec or 5-36 s ; 6-12 s]

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.

Question

A body is projected upwards with a velocity of 30 m/s. Find (a) the time when its velocity
will be 5 m/s ; (b) the time when it will be 20 metres above the point of projection and (c)
the time when it will return to the point of projection.
[Ans. 2-55 s : 0-76 sec or 5-36 s; 6-12 s]

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