What Are Some Possible Topics for an IB Physics Extended Essay?

[Newton04]

Homework Statement

I am currently doing the IBDP and have chosen physics as my EE subject. I am struggling to decide on a topic.

Relevant Equations

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These are a few topics I had shortlisted, please advise if anyone of them is EE worthy:
- To what extent does the rotational velocity of a ping-pong ball affect its horizontal travel distance?
-How is the drop time of a parachute affected by variables such as mass, canopy area, size of apex vent, number or length of strings, canopy shape?
- Rolling ball down an inclined plane - At what angle will the horizontal speed of a rolling ball be the fastest?
- To what extent does temperature affect the efficiency of Lithium-ion batteries?

 

[niteOwl]

Hi. It just depends what kind of essay you want to write. The first three subjects are very similar kinematics problems, so you will be referring to those formulae and parameters. The last point, the efficiency of Li-ion batteries, is perhaps more readily addressed with reference to empirical data. There will be lots of charts and tables online to help with this.
Good luck