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Remember that when dealing with collisions in 2-dimensions, momentum is conserved in each dimension. Two pucks are sliding on a frictionless tabletop. Block A (mass 3.54 kg) is moving to the East (+x direction) at 3.00 m/s. Block B (mass 4.25 kg) is moving to the North (+y direction) at 3.60 m/s. Assume the system to be both Block A and Block B. (Note: It could be useful to make a drawing of the situation.) What is the x-component of the total momentum of the system before the collision?

2.) What is the y-component of the total momentum of the system before the collision?


3.) What is the x-component of the total momentum of the system after the collision?


4.) What is the y-component of the total momentum of the system after the collision?

User JanKanis
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2 Answers

3 votes

Final answer:

The x-component of the total momentum of the system before the collision is 10.62 kg*m/s, and the y-component is 15.30 kg*m/s. The x and y-components of the total momentum of the system after the collision cannot be determined without additional information.

Step-by-step explanation:

When dealing with collisions in 2-dimensions, the x-component of the total momentum of the system before the collision is calculated by multiplying the mass of Block A by its velocity in the x-direction: 3.54 kg * 3.00 m/s = 10.62 kg*m/s.

The y-component of the total momentum of the system before the collision is calculated by multiplying the mass of Block B by its velocity in the y-direction: 4.25 kg * 3.60 m/s = 15.30 kg*m/s.

After the collision, momentum is still conserved in each dimension. The x-component of the total momentum of the system after the collision depends on the final velocities of Block A and Block B, which are not given in the question. Therefore, it is not possible to determine the x-component of the momentum after the collision without additional information.

Similarly, the y-component of the total momentum of the system after the collision also depends on the final velocities of Block A and Block B, which are not provided. So, it is not possible to determine the y-component of the momentum after the collision without additional information.

User Ashwin Mothilal
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3 votes

Answer: the momentum is due to the mass

Step-by-step explanation:

User Saurabh Gupta
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4.8k points