Help Physics Momentum/Impulse problem

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In summary, the conversation discussed the momentum of a baseball flying towards an outfielder and the impulse needed to bring it to a stop. There was also mention of the maximum force a person could exert and the length of time needed to exert it. However, there may be an error in the given numbers, as the calculated velocity of the baseball does not seem realistic.
  • #1
slimyspacewit
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If a baseball were flying towards an outfielder with a momentum of 900 kg m/s. What impulse would the outfielder need to apply to bring the ball to a stop? AND If the maximum force the dude can exert is 100N for what length of time will he have to exert this force?
 
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  • #2
This sounds like a homework question.
Please post it in the homework forums and they can help you there.
 
  • #3
I think there is something wrong with your number. I don't know the mass of a baseball but I would guess about 0.2 to 0.3 kg.
To have a momentum of 900 kg m/s means a velocity of 3000 to 4500 m/s and that does not sound reasonable
 

1. What is momentum and impulse in physics?

Momentum is a property of a moving object that is determined by its mass and velocity. It is a measurement of how difficult it is to stop the object. Impulse, on the other hand, is a force acting on an object for a certain amount of time, resulting in a change in the object's momentum.

2. How do you calculate momentum and impulse?

Momentum is calculated by multiplying an object's mass by its velocity. The formula is: p = m * v. Impulse is calculated by multiplying the force acting on an object by the time it is applied. The formula is: J = F * t.

3. What is the relationship between force, time, and impulse?

The relationship between force, time, and impulse is that the product of force and time is equal to the change in momentum of an object. This means that the more force applied to an object for a longer period of time, the greater the change in momentum.

4. How is the conservation of momentum related to collisions?

The conservation of momentum states that in a closed system, the total momentum of the system remains constant. This means that in a collision between two objects, the total momentum before the collision is equal to the total momentum after the collision.

5. How can momentum and impulse be applied in real-life situations?

Momentum and impulse are important concepts in physics that have practical applications in everyday life. For example, understanding the relationship between force and time can help engineers design safer car airbags that reduce the impact force on passengers during a collision. Additionally, athletes can use the principles of momentum and impulse to improve their performance in sports like diving and gymnastics.

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