Posted by **johnny** on Saturday, December 6, 2008 at 6:48pm.

An electron has a constant acceleration of 2.0 m/s2. At a certain instant its velocity is 10.9 m/s.

(a) What was its velocity 2.5 s earlier?

m/s

(b) What is its velocity 2.5 s later?

m/s

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