Class 9 Physics Question Answer in 90 to 120 words.
Chapter 7
5. (2) An athlete completes one round of circular track of diameter 200m in 40 s.
What will be the distance covered and the displacement at the end of 2min 20s?
Chapter 8
2. Write newton's second law of motion and derive F = ma
4. Explain Galileo's thinking about motion (from ncert book)
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* Satisfied Answer
* under 120 words
* verified answer and Moderator Answer or Genius Answer
Chapter 7
5. (2) An athlete completes one round of circular track of diameter 200m in 40 s.
What will be the distance covered and the displacement at the end of 2min 20s?
Chapter 8
2. Write newton's second law of motion and derive F = ma
4. Explain Galileo's thinking about motion (from ncert book)
__________________________________
* Satisfied Answer
* under 120 words
* verified answer and Moderator Answer or Genius Answer
Answers & Comments
Verified answer
Answer:
chapter 7 motion
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chapter 8
Newton's second law of motion states that the force acting on an object is directly proportional to the mass of the object and the acceleration it experiences. This can be mathematically expressed as F = ma, where F represents the force, m represents the mass of the object, and a represents the acceleration.
To derive the equation F = ma, we can start with Newton's second law and analyze its components. The force acting on an object can be defined as the rate of change of momentum. Momentum is the product of an object's mass and velocity, represented by p = mv.
Explanation:
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Explanation:
Chapter 7
5. (2) The distance covered and the displacement at the end of 2 min 20 s will be 2200 m and 200 m respectively.
Chapter 8
2. Newton's second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation.
4. Galileo, using an Archimedean model of floating bodies, and later the balance, argues that there is only one principle of motion—heaviness. Bodies move upward not because they have a natural lightness, he says, but because they are displaced or extruded by other heavier bodies moving downward.