Lab Homework: Momentum 2. Two blocks, C and D are pushed toward one another on a

Question

Lab Homework: Momentum 2. Two blocks, C and D are pushed toward one another on a V, = 8 m/s v,,-4 m/s frictionless surface as shown. Block C has a mass of 3 kg and block D has a mass of 5 kg I) Find the initial momentum (magnitude and direction) of block C Find the initial momentum (magitude and direction) of block D km/s to the let iii. Find the initial momentum (magnitude and direction) of the system consisting of blocks C and D 3. Suppose that after blocks C and D from problem 2 collided, they stuck together. Find the final velocity (magnitude and direction) for the two blocks. Show how you determined your answer. 416705 m/second to 4. Suppose that after blocks C and D from problem 2 collided, block C remained at rest. Find the final velocity (magnitude and direction) for block D. Show how you determined your answer. 5. Suppose that after blocks C and D from problem 2 collided, block C moved off to the left with a speed of 2 m/s. Find the final velocity (magnitude and direction) for block D. Show how you determined your answer. In problems 3 - 5, we looked at 3 different possible results of the collision between the two blocks. If we were to set up the experiment shown in problem 2, what property of the blocks will determine what will actually happen after the collision? 6.

Explanation / Answer

yes all your solutions are correct,

now coming to problem 6,

if such a experiment is setup the surface properties of the colliding surface will determine the type of collision.

the collision can be -

-elastic ( relative motion before and after collision remains constant)

or inelastic.( after collison the blocks stick together, In a perfectly inelastic collision, i.e., a zero coefficient of restitution, the colliding particles stick together.)

hence the coeeficient of restitution is the important factor that determines what happens after collision.

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