A car travelling between two places 2.5 km apart is uniformly accelerated for the first 10 seconds, during which period it covers 200 m. It then runs with a constant velocity, until it is finally retarded uniformly in the last 200 m. Find the maximum speed of the car and the time taken to complete the journey between the two places.

A car travelling between two places 2.5 km apart is uniformly accelerated for the first 10 seconds, during which period it covers 200 m. It then runs with a constant velocity, until it is finally retarded uniformly in the last 200 m. Find the maximum speed of the car and the time taken to complete the journey between the two places.

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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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

A car travelling between two places 2.5 km apart is uniformly accelerated for the first 10
seconds, during which period it covers 200 m. It then runs with a constant velocity, until it is
finally retarded uniformly in the last 200 m. Find the maximum speed of the car and the time
taken to complete the journey between the two places.

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