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April 16, 2014

April 16, 2014

Posted by **beanstalk1** on Monday, September 10, 2012 at 6:23am.

Answer

40.0 cm.

60.0 cm.

80.0 cm.

100.0 cm.

More information is needed to answer this question.

- Physics -
**Henry**, Tuesday, September 11, 2012 at 4:01pmD2/D1 = 0.5a*(2t)^2/0.5a*t^2.

D2/D1 = 0.5a*4t^2/0.5a*t^2

D2/D1 = 4t^2/t^2 = 4.

D2/20 = 4

D2 = 80 cm.

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