Figure 1 below is a diagram showing two cars, A & B, travelling along a straight road, and also a stationary observer at the side of the road (in bottom left-hand corner). Assume that moving from the left to the right along the road is in the positive direction and that moving from right to left the negative direction. A B Figure 1. Cars travelling along a road In each of the following scenarios, the velocities of each car are provided. Determine the velocities of Car A, Car B and the Observer from the perspective of (a) the Observer, (b) Car A and (c) Car B: VELOCITY (km/hr) 0 30 SCENARIO OBJECT Observer Car A

Figure 1 below is a diagram showing two cars, A & B, travelling along a straight road, and also a stationary observer at the side of the road (in bottom left-hand corner). Assume that moving from the left to the right along the road is in the positive direction and that moving from right to left the negative direction. A B Figure 1. Cars travelling along a road In each of the following scenarios, the velocities of each car are provided. Determine the velocities of Car A, Car B and the Observer from the perspective of (a) the Observer, (b) Car A and (c) Car B: VELOCITY (km/hr) 0 30 SCENARIO OBJECT Observer Car A

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

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

1. Figure 1 below is a diagram showing two cars, A & B, travelling along a straight road, and also a stationary
observer at the side of the road (in bottom left-hand corner). Assume that moving from the left to the right
along the road is in the positive direction and that moving from right to left the negative direction.
Figure 1. Cars travelling along a road
In each of the following scenarios, the velocities of each car are provided. Determine the velocities of Car
A, Car B and the Observer from the perspective of (a) the Observer, (b) Car A and (c) Car B:
SCENARIO
1
2
3
4
5
6
7
OBJECT
Observer
Car A
Car B
Observer
Car A
Car B
Observer
Car A
Car B
Observer
Car A
Car B
Observer
Car A
Car B
Observer
Car A
Car B
Observer
Car A
Car B
VELOCITY (km/hr)
0
30
50
0
60
50
0
45
45
4
30
50
0
-30
50
0
30
-50
-2
30
50

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