Homework Help: physics emegency!

Posted by joe on Monday, November 14, 2011 at 9:21pm.

A 16 kg object with a velocity 7.5 m/s explodes into two equal fragments. One flies off with a velocity 2.5i -2.5j m/s.
What is the velocity of the other fragment in vector notation?

physics emegency! - bobpursley, Monday, November 14, 2011 at 9:22pm
Momentum is conserved. With two masses, the second mass velocity must be the negative of the first.

V=-(2.5i-2.5j)
physics emegency! - joe, Monday, November 14, 2011 at 9:23pm
so the 7.5 is irrelevant ?
physics emegency! - Anonymous, Monday, December 3, 2012 at 10:16am
dis is rong

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