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April 1, 2015

April 1, 2015

Posted by **Anonymous** on Tuesday, January 14, 2014 at 9:31pm.

(a) When, if ever, is the particle's velocity zero? (Enter the value of t or 'never'.)

(b) When is its acceleration a zero?

- physics -
**bobpursley**, Tuesday, January 14, 2014 at 9:34pmI wonder if you have had calculus...

velocity=dx/dt=35-21t^2.

so velocity is zero when t^2=35/32 solve for t.

acceleration= dv/dt=-42t so acceleation is zero only when t=0

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