Calculate Kinetic Energy of 50.5g Golf Ball at 26.5m Height

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Homework Help Overview

The discussion revolves around calculating the kinetic energy of a golf ball at a specific height, as well as determining its speed at a lower height. The subject area includes concepts of energy conservation and kinematics.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss how to calculate kinetic energy at a given height and how to find speed using energy principles. There is a question about the method for part b of the problem.

Discussion Status

Some participants have provided guidance on how to approach part b by suggesting to find the kinetic energy at the new height and relate it to speed. Multiple interpretations of the energy conservation equation are being explored.

Contextual Notes

Participants are operating under the assumption of neglecting air resistance and are working with specific heights and initial conditions provided in the problem statement.

eanderson
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A 50.5-g golf ball is driven from the tee with an initial speed of 40.4 m/s and rises to a height of 26.5 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 6.02 m below its highest point?

A: 28.0838075 J
b: ?

what do i do for part b?
 
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First find the kinetic energy at that height... do it the same way you did for part a...

when you have the kinetic energy, you can get speed.
 
0 = mgh + mv^2/2 right? This way find v.
 
For Part B he is right... Do the same thing except with a height of 20.48 instead. Just subtracting less Potential Energy since the ball is now gaining more Kinetic.
 
Last edited:

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