Question

the displacement of a body can be positive, negative or sometimes zero .Explain this with the help of the examples ​

Answer 1

Answer:

displacement is the shortest distance between initial position and final position. if both are same, then least distance would be zero. for example- if you travel from your home to school and back to home, distance would be twice the distance between your home and school

Explanation:

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Answer 2

Answer:

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POSITIVE WORK :the work done on an object is said to be positive work when force and displacement are in same direction.

example: When an object moves on horizontal surface,force and displacement acts in forward direction. So,work done is positive.

NEGATIVE WORK:The work done is said to be negative work when force and displacement are in opposite direction.

example: When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction.

ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero.

example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.