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October 20, 2014

October 20, 2014

Posted by **courtney** on Monday, June 18, 2012 at 6:41pm.

- Physics -
**Elena**, Tuesday, June 19, 2012 at 10:20am2•π•n=ε•t,

ε = 2•π•n /t=2•π•2.5 /10= π/2 rad/s²,

2•π•N=ε•t²/2,

N= ε•t²/4•π= π•100/2•4•π=12.5 rev.

v=2•π•n•R=2•π•2.5•0.4 =2•π m/s,

a= ε•R= π•0.4/2=0.2•π m/s²

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