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Concept explainers
To describe: The trip from home to school in terms of displacement, distance, position and speed.
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Explanation of Solution
Introduction:
Position: It tells about the location of object with respect to some reference point.
Displacement: It is defined as change in position of object. It is a vector quantity.
The S.I unit of displacement is meter (m).
Distance: It is the total distance travelled by object. It is a scaler quantity.
Speed: It is defined as rate of change of distance.
Where,
Velocity: It is defined as rate of change of displacement. It is a vector quantity.
Where,
Consider point
Distance: The total distance covered by the boy is
Displacement: It is the difference between initial and final point. The final position of boy is same because boy is returned back to home.
So, displacement is zero.
Speed: It is the ratio of net distance covered by body to time taken. So the speed of boy is,
Velocity: It is the ratio of net displacement of body to time taken. So the displacement of body is,
Chapter 2 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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