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Schoomy
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Homework Statement
A 0.028 kg bullet is fired vertically at 185 m/s into a 0.15 kg baseball that is initially at rest. The bullet lodges in the baseball and, after the collision, the baseball/ bullet rise to a height of 37 m.
(a) What was the speed of the baseball/bullet right after the collision?
(b) What was the average force of air resistance while the baseball/bullet was rising? (Consider the positive direction to be upwards.)
Homework Equations
conservation of momentum.
The Attempt at a Solution
m1v1=m2v2 yeilding v2 (velocity of ball/bullet combo) of 29.1 m/s.
This was correct.
However, I can't figure out b.
I tried using Force of Air Resistance = KE - PE, but that doesn't work.
I also tried using Force Air Resitance =KE/h - m(total)-g
That didn't work either (found it on yahoo answers).
What am I missing here?