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Viraj Koushik

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Viraj Koushik
Viraj Koushik
Asked: March 4, 2024In: Class 9 Science

What role does the rate of change of momentum play in determining the force needed for various physical actions, such as catching a ball or breaking a slab of ice?

The rate of change of momentum determines the force required for various physical actions. A slower rate of change of momentum reduces the force required, while a faster rate of change of momentum increases it. This understanding helps athletes and ...

ncertscience
  • 1 1 Answer
  • 18 Views
  • 0 Votes
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Viraj Koushik
Viraj Koushik
Asked: March 4, 2024In: Class 9 Science

How does increasing the time of impact affect the force required to stop a falling athlete in a high jump event?

Increasing the time of impact decreases the rate of change of momentum, thereby reducing the force required to stop the falling athlete. This principle is crucial in minimizing injury during high jump events.

ncertscience
  • 1 1 Answer
  • 20 Views
  • 0 Votes
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Viraj Koushik
Viraj Koushik
Asked: March 4, 2024In: Class 9 Science

What principle allows a karate player to break a slab of ice with a single blow?

A karate player breaks a slab of ice with a single blow by applying a force over a small area in a very short duration, resulting in a large rate of change of momentum. This principle, based on the second ...

ncertscience
  • 1 1 Answer
  • 36 Views
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Answer
Viraj Koushik
Viraj Koushik
Asked: March 4, 2024In: Class 9 Science

How does falling onto a cushioned or sand bed in a high jump event reduce the force experienced by an athlete?

Falling onto a cushioned or sand bed in a high jump event increases the time over which the athlete’s fall comes to a stop after making the jump. This decreases the rate of change of momentum and consequently reduces the ...

ncertscience
  • 1 1 Answer
  • 28 Views
  • 0 Votes
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Viraj Koushik
Viraj Koushik
Asked: March 4, 2024In: Class 9 Science

What happens if a fast-moving cricket ball is stopped suddenly by a fielder?

If a fast-moving cricket ball is stopped suddenly, its high velocity decreases to zero in a very short interval of time. Consequently, the rate of change of momentum of the ball becomes large, requiring a significant force to hold the ...

ncertscience
  • 1 1 Answer
  • 41 Views
  • 0 Votes
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