Friday

July 25, 2014

July 25, 2014

Posted by **Need Help** on Sunday, September 27, 2009 at 3:36pm.

- physics -
**MathMate**, Sunday, September 27, 2009 at 5:21pmThe acceleration is due south, so the east-west component (40 m/s) is not altered.

For the north-south component, at t=0,

initial velocity = 0 m/s

after 8 seconds,

velocity v=0+(-2.5)8 = -20 m/s (<0 for south)

Velocity = (40,-20) m/s

Magnitude = √(40²+20²)

=44.72 m/s

direction:

atan(-20/40)=-26.57°, or

26.57° south of east.

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