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fari File Edit marks Window Hel ? 36% D Thu 10:37:28 AM a My d. v'1:-0.31 m/s and v'2-0.19 m/s Question 3 Not yet answered Points out of 1.00 Flag question Collisions: Two blocks on a frictionless horizontal surface are on a collision course. One block with mass 0.74 kg moves at 2.01 m/s to the right and collides with a 1.05 kg mass at rest and the two masses stick together. Find the final velocities of the two masses after the collision. Select one: a. v1 0.83 m/2 and v2-0.83 m/s b. v1-0.35 m/2 and v2-1.66 m/s O c. v1-0.83 m/2 and v'2-1.18 m/s o d. v1-0.84 m/2 and v2-0.84 m/s estion 4 e left 3:33:31

Explanation / Answer

By conservation of momentum:

m1v1 + m2v2 = (m1 + m2)vf

=> vf = (m1v1 + m2v2)/(m1+m2)

= (0.74*2.01 + 1.05*0)/(0.74+1.05)

= 0.83 m/s (for both the blocks)

So correct option is a.

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