How would I find the force of someones arm throwing a football?

October 25, 2009 by admin · 7 Comments
Filed under: Physics 
football
cyclone16 asked:


How would I find the force of someones arm throwing a football?
Or at least can you give me a way to go about it?
The football is 250g and the arm length is 50cm. If this is insufficient info then can you just show me how to go about doing it with equations and what not. Thanks so much.

How high does the football go above ground?

August 23, 2009 by admin · 1 Comment
Filed under: Physics 
football
Natiphy2007 asked:


A football is kicked vertically upward from the ground and a student gazing out of the window sees it moving upward past her at velocity 5.30 . The window is a height 12.5 above the ground. You may ignore air resistance.Take the free fall acceleration to be = 9.80 .How much time does it take to go from the ground to its highest point?
Take the free fall acceleration to be = 9.80 .

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