Gravitation · Class 9 · CBSE Science

An object is thrown vertically upwards with an initial velocity u. What is its acceleration at the highest point of its motion?

Practice question from Gravitation (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.

medium · MCQ · Q-D57742

An object is thrown vertically upwards with an initial velocity uu. What is its acceleration at the highest point of its motion?

  1. A.Zero
  2. B.Equal to acceleration due to gravity (gg) downwardsCorrect answer
  3. C.Equal to −u-u upwards
  4. D.Maximum

Solution

At the highest point, the velocity of the object becomes momentarily zero, but the gravitational force acting on it does not change. Therefore, it continues to experience a constant downward acceleration equal to gg (9.8 m/s29.8 \text{ m/s}^2).

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