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December 22, 2014

December 22, 2014

Posted by **tani** on Tuesday, September 8, 2009 at 9:27pm.

- science -
**j**, Tuesday, September 25, 2012 at 12:01amUse kinematics to calculate the height for the firstball,

which is Vf=0

a=9.8

t=1.5

because you take the total time it take to go up and come back down and divide it by 2. 3/2 = 1.5

getting an initial velocity of

Voy= 14.7m/s

V = t(9.8)

= 1.5(9.8)

= 14.7

This must have the same velocity in the y to get that height of 11.025m calculated in part 1, so just use trig to get the answer.

14.7/sin30

=29.4 m/s

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