Question

discuss positive, negative and zero displacement............ class 9 physics​

Answer 1

Answer:

When an object moves in a straight line displacement in positive. This is positive displacement. When the initial and final position are same for an object,then it has zero displacement. This is zero displacement. Displacement can never be negative.

Answer 2

Answer:

Explanation:

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.