A 5.0 kg object moving in the + x direction at 5.5 m/s collides head-on with a 2

Question

A 5.0 kg object moving in the +x direction at 5.5 m/s collides head-on with a 2.9 kg object moving in the -x direction at 4.0 m/s. Find the final velocity of each mass for each of the following situations. (Take the positive direction to be +x.)

(a) the bodies stick together

- m/s (5.0 kg mass)

-m/s (2.9 kg mass)

(b) the collision is ellastic

-m/s (5.0 kg mass)

-m/s (2.9 kg mass)

(c) the 5.0 kg body is at rest after the collision

-m/s (5.0 kg mass)

-m/s (2.9 kg mass)

(d) the 2.9 kg body is at rest after the collision

-m/s (5.0 kg mass)

-m/s (2.9 kg mass)

(e) the 5.0 kg body has a velocity of 4.0 m/s in the -x direction after the collision

-m/s (5.0 kg mass)

-m/s (2.9 kg mass)

Explanation / Answer

we can use simple laws of conservation of momentum to solve

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