Find Power Homework: Is it Possible?

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SUMMARY

The discussion centers on calculating the power exerted by a stomp on a stomp rocket launched at a 45-degree angle, with a mass of 15 grams and a distance traveled of 27 meters. Participants suggest using the equation for power, P = W/T, where work can be derived from the change in kinetic energy as the rocket leaves the ground. To estimate power, one must determine the initial velocity of the rocket and approximate the time of the stomp's impact based on the free fall time. Understanding the source of the force exerted on the rocket is also emphasized.

PREREQUISITES
  • Understanding of basic physics concepts such as work, energy, and power
  • Familiarity with kinematic equations and projectile motion
  • Knowledge of gravitational potential energy (PE = mgh)
  • Ability to calculate initial velocity and free fall time
NEXT STEPS
  • Study the principles of projectile motion and its equations
  • Learn how to calculate work done using kinetic energy changes
  • Research methods for estimating time of flight in free fall scenarios
  • Explore the relationship between force, mass, and acceleration in physics
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Students in physics, educators teaching mechanics, and anyone interested in understanding the dynamics of projectile motion and power calculations.

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Homework Statement


I stomped on a stomp rocket aimed at 45degrees. Mass of the rocket is 15grams. It went 27 meters. Without a time device, is it possible to find power?

Homework Equations



P=[tex]\frac{W}{T}[/tex] = [tex]\frac{FD}{T}[/tex]=FV

The Attempt at a Solution



Would the PE=mgh be the force of my stomp?

What would i be using for acceleration, in P=Fd/T
 
Last edited:
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If you're looking for the power of your stomp: you can find the initial velocity of the rocket (based on where it landed), and use that to find the work done on the rocket (the change in kinetic energy just as it leaves the ground).

Then you can approximate the time over which you did the work (i.e. the free fall time over the height of the stomp-thing/air-bag/whatever).

Otherwise, you could think about where that power is actually coming from---i.e. what exactly is causing the force to be exerted on the air-bag.
 

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