# Physics help--explosion

Figure 9-56 shows a two-ended "rocket" that is initially stationary on a frictionless floor, with its center at the origin of an x axis. The rocket consists of a central block C (of mass M = 6.00 kg) and blocks L and R (each of mass m = 2.90 kg) on the left and right sides. Small explosions can shoot either of the side blocks away from block C and along the x axis. Here is the sequence: (1) At time t = 0, block L is shot to the left with a speed of 3.00 m/s relative to the velocity that the explosion gives the rest of the rocket. (2) Next, at time t = 0.80 s, block R is shot to the right with a speed of 3.00 m/s relative to the velocity that the explosion gives to block C?

I can not paste the graph here....sorry.
they three box are placed on the ground together in this order,L,C,R

the questions are:
(a) What is the velocity of block C at
______ m/s i
(b) What is the position of block C's center at that time?
x =_______ m

WEll, the sum of all momentums will be zero.So work out the velocities for c, LR at time zero, then at time-.8, you have the initial velocity (momentum) of LR, then the momentum of R with respect to C.

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asked by fizzix

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