Initial Velocity Question

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Homework Help Overview

The discussion revolves around determining the initial velocity of a water balloon launched vertically using a water balloon launcher, without the aid of a stopwatch. Participants explore concepts related to kinematics and the equations of motion, particularly in the context of a lab assignment for extra credit.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the conservation of energy and the equations of motion, questioning how to relate the initial velocity to displacement without time measurements. There are attempts to identify relevant equations and clarify terminology related to final and initial velocities.

Discussion Status

The conversation is active, with participants sharing insights and clarifying concepts. Some guidance has been provided regarding the use of equations and the implications of gravity on the motion of the water balloon. There is ongoing exploration of how to measure displacement and the relationship between height and initial velocity.

Contextual Notes

Participants express constraints regarding the measurement of displacement for heights greater than one meter and the limitations of their available supplies. There is an emphasis on understanding the physics rather than focusing solely on measurement techniques.

  • #61
Yeah, my last post indicated that i could use a protractor , but after googling , i do not know how to measure displacement or distance for a vertical length using one

Would you happen to have a tutorial or maybe some helpful tips on this process?
 
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  • #62
Have you learned about sin, cos, and tangent? The protractor can be used to measure the angle between the ground and the balloon, if you stand a distance away from the launcher. Measure this distance as well, and draw a right triangle. You'll have the bottom of the right triangle, an acute angle, and of course, the 90 degree angle at the launcher. Simple right triangle trig can be used to solve for the vertical side of the triangle.
 
  • #63
ok thanks drpizza, yeah i have learned about sin,cos tan, though this will be hard measuring it in a matter of seconds
 

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