For full points I need to see the work and a correct answer. Thank you. A17. A 5

Question

For full points I need to see the work and a correct answer.

Thank you.

A17. A 5kg bock moving at 8 m/s and a 10 kg block moving at 2 m/s collide. The collision is elastic, and the INITIAL conditions are shown below as observed in the lab frame of reference. Assume the mass of the spring is negligible. Calculate the maximum compression of the wring during this process. A20. Two masses are initially moving as shown in the diagram. One is a mass of 10.0 kg, the other a mass of 5.00 kg. They collide at the origin and stick together, forming a composite mass of 15.0 kg which moves away from the origin as a single mass, as shown. Use the principle of momentum conservation to find the magnitude and direction of the combined masses after the collision.

Explanation / Answer

m?=5
u? = 8
m?=10
u? = 2

1)at maximum compression of spring both of them will have same velocity.
Momentum equation
(m?+m?)*v = m?u? +m?u?
15v = 40+ 20
v= 4

Elastic collision <------->Total energy is conserved

initial energy =

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