Simple Concept Question Regarding Impulse and Momentum

In summary, the egg that does not break experiences a smaller change in momentum or impulse, which is due to the longer stopping distance and lower peak force caused by the pillow. This supports the answer of C, maximum force, as the reason for the egg not breaking in the egg/pillow scenario.
  • #1
etherealcalc
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It's simple to everyone but me haha
1. Homework Statement

We toss an egg onto the floor, and it breaks. We toss an egg onto a pillow on the floor, and it does not break. The egg that does not break experiences a smaller:
A. Impulse
B. Change in momentum
C. Maximum Force

Homework Equations


Ft=delta(p)

The Attempt at a Solution


A and B are the same answer, so if I were to just want to find the answer, it would be C by POE because they both can't be right. However, I thought impulse was the reason that the egg/pillow combo doesn't shatter the egg, because there's more time. Is it C because impulse implies that the egg had to bounce a bit up, and it doesn't do that, it just shatters?
 
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  • #2
etherealcalc said:
A and B are the same
Right.
etherealcalc said:
Is it C because impulse implies that the egg had to bounce a bit up
No.
Impulse is force times time (as an integral). What is likely to break an egg, a small force for a long time or a large force for a short time? Which would you prefer to be subjected to?
 
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  • #3
Perhaps think about the effect the pillow has on the stopping distance. Apply the equations of motion to think about the deceleration and Newtons law get the force.

Edit: c says maximum force.
 
  • #4
haruspex said:
Right.

No.
Impulse is force times time (as an integral). What is likely to break an egg, a small force for a long time or a large force for a short time? Which would you prefer to be subjected to?
I would think either would break an egg, but couldn't a small force for a longer time possibly be a smaller impulse?
 
  • #5
etherealcalc said:
I would think either would break an egg, but couldn't a small force for a longer time possibly be a smaller impulse?
Consider a given impulse spread over either a short time or a long time. If spread (evenly) over a long time then the peak force is small; if only taking a short time the force must be large.
For a small force, consider, say, the weight of a fly, about 10-4N. If a fly sits on an egg for a year, what is the impulse? Could it break the egg?
What about the same impulse spread over 1ms?
 
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Related to Simple Concept Question Regarding Impulse and Momentum

What is impulse?

Impulse is a measurement of the change in momentum of an object. It is calculated by multiplying the force applied to an object by the time interval over which it is applied.

What is momentum?

Momentum is a measurement of an object's motion and is calculated by multiplying its mass by its velocity. It is a vector quantity, meaning it has both magnitude and direction.

What is the relationship between impulse and momentum?

The relationship between impulse and momentum is described by the impulse-momentum theorem, which states that the change in an object's momentum is equal to the impulse applied to it. In other words, the more force applied to an object over a longer period of time, the greater its change in momentum will be.

How does impulse affect the motion of an object?

Impulse can cause an object to change its velocity and direction of motion. This is because the application of a force over a period of time can cause a change in an object's momentum, which in turn affects its motion.

What are some real-life examples of impulse and momentum?

Examples of impulse and momentum can be seen in everyday activities such as throwing a ball, hitting a baseball with a bat, or jumping off a diving board. In all of these scenarios, the application of a force over a period of time results in a change in momentum and affects the motion of the object.

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