Practice MOTION OF OBJECTS UNDER THE INFLUENCE OF GRAVITATIONAL FORCE OF THE EARTH - 9.2.2 | 9. Gravitation | CBSE 9 Science
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Practice Questions

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Question 1

Easy

If a stone and paper are dropped at the same time in a vacuum, which hits the ground first?

💡 Hint: Think about the effect of air resistance.

Question 2

Easy

What is the constant acceleration due to gravity on Earth?

💡 Hint: It's the same value we use in our calculations for gravity.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the acceleration due to gravity on Earth?

  • 9.8 m/s^2
  • 10 m/s^2
  • 8.5 m/s^2

💡 Hint: Think about the standard value used in physics.

Question 2

True or False: In a vacuum, a feather will fall faster than a stone.

  • True
  • False

💡 Hint: Recall what happens in the absence of air.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

An object is dropped from a height of 80 m. How long does it take to reach the ground? Assume g = 9.8 m/s^2.

💡 Hint: Rearrange the formula to solve for time.

Question 2

A rock thrown upwards at 30 m/s reaches a height of 45 m. How long does it take to reach this height?

💡 Hint: Remember to use the negative acceleration due to gravity when solving.

Challenge and get performance evaluation