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April 18, 2014

April 18, 2014

Posted by **julia** on Monday, December 10, 2007 at 9:48pm.

plz plz plz help!!

- physics!! plz answer me! -
**drwls**, Tuesday, December 11, 2007 at 6:36amUse the impulse-momentum wethod to answer this question. The impulse is the average force Fav, multipled bu the tme that it is applied (which is the time it takes to decelerate the ball).

|Fav| * T = 0.15 kg * 26 m/s

We only need the absolute value of the force, so never mind the minus sign in front of -390N.

T = .015*26/390 = ? seconds

The distance X travelled while stopping equals average velocity x Time

X = (1/2)V^2*M/Fav

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