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Q: An object is thrown upwards. It reaches a height of 100 meters and then returns to the thrower. so ..................
  • A. The actual displacement of the object is 50 m
  • B. The total distance travelled by the object is zero
  • C. The actual displacement of the object is 100 m
  • D. The actual displacement of the object is zero
Correct Answer: Option D - When an object moves along any path from one point P to another point Q, the magnitude of this displacement will be the minimum distance between those two points. Displacement is a vector amount. When an object is thrown upwards, it reaches a height of 100 m and then returns to the thrower, then the actual displacement of the object is zero. Since minimum distance between final position and initial position is zero.
D. When an object moves along any path from one point P to another point Q, the magnitude of this displacement will be the minimum distance between those two points. Displacement is a vector amount. When an object is thrown upwards, it reaches a height of 100 m and then returns to the thrower, then the actual displacement of the object is zero. Since minimum distance between final position and initial position is zero.

Explanations:

When an object moves along any path from one point P to another point Q, the magnitude of this displacement will be the minimum distance between those two points. Displacement is a vector amount. When an object is thrown upwards, it reaches a height of 100 m and then returns to the thrower, then the actual displacement of the object is zero. Since minimum distance between final position and initial position is zero.