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Statement I: In high jump, it hurts less...

Statement I: In high jump, it hurts less when an athlete lands on a heap of sand.
Statement II: Because of greater distance and hence greater time over which the motion of an athlete is stopped, the athlete experieces less force when lands on the heap of sand.

A

Statement I is true, statement II is true, Statement II is the correct explanation for statement I.

B

Statemet I is true, Statement II is true , Statement II is NOT the correct explanation for Statement I

C

Statement I is True, Statement II is False.

D

Statement I is False, Statement II is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements regarding the physics of high jump landing, we will break down the concepts involved in each statement and their implications. ### Step-by-Step Solution: 1. **Understanding Statement I**: - **Statement I**: "In high jump, it hurts less when an athlete lands on a heap of sand." - **Explanation**: When an athlete lands on a soft surface like sand, the impact is cushioned. This is because the sand deforms and allows the athlete to sink into it, which helps in reducing the sudden stop that would occur on a harder surface. **Hint**: Consider how different surfaces absorb energy during a landing. 2. **Understanding Statement II**: - **Statement II**: "Because of greater distance and hence greater time over which the motion of an athlete is stopped, the athlete experiences less force when landing on the heap of sand." - **Explanation**: When landing on sand, the distance over which the athlete comes to a stop is greater compared to landing on a hard surface. According to the impulse-momentum theorem, the impulse (force multiplied by time) is equal to the change in momentum. If the stopping time is increased, the average force experienced by the athlete is reduced. **Hint**: Think about how time and distance affect the force experienced during a collision. 3. **Connecting the Statements**: - Both statements are related. The cushioning effect of the sand increases the stopping distance and time, leading to a reduction in the average force experienced by the athlete. Therefore, both statements are correct and Statement II provides a valid explanation for Statement I. **Hint**: Reflect on the relationship between force, time, and distance in the context of momentum. 4. **Conclusion**: - Both Statement I and Statement II are true. The reasoning provided in Statement II correctly explains why landing on sand is less painful for the athlete. ### Final Answer: Both Statement I and Statement II are correct, and Statement II is the correct explanation for Statement I. ---

To analyze the given statements regarding the physics of high jump landing, we will break down the concepts involved in each statement and their implications. ### Step-by-Step Solution: 1. **Understanding Statement I**: - **Statement I**: "In high jump, it hurts less when an athlete lands on a heap of sand." - **Explanation**: When an athlete lands on a soft surface like sand, the impact is cushioned. This is because the sand deforms and allows the athlete to sink into it, which helps in reducing the sudden stop that would occur on a harder surface. ...
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