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January 28, 2015

January 28, 2015

Posted by **Jennifer** on Friday, June 15, 2012 at 8:41pm.

I already got 6.3m/s for A and I got B wrong. I thought it was 1.12 s

- Physics Velocity Question -
**Damon**, Friday, June 15, 2012 at 8:54pmv = - 1.50 (4.20) sin 4.2 t

the maximum speed is when the sine function is +1 or -1

since the sign is negative the sine function reaches -1 first.

|v|max = max speed = 1.5*4.2 = 6.3 m/s

this is when 4.2 t is pi/2 radians

t = pi/8.4 = .374 s

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