Mass a (2.0 kg) is moving with an initial velocity of 15 m/s in the +x-direction, and it collides with mass b (5.0 kg), initially at rest. after the collision, the two objects stick together and move as one. what is the change in kinetic energy of the system as a result of the collision?

Explanation:

It is given that,

Mass of object A,

Initial speed of object A,

Mass of object B,

Initial speed of object A, (at rest)

Le V is the final speed when they lock and move with one common velocity. Using the conservation of momentum to find it.

V = 4.28 m/s

Initial kinetic energy of the system is :

Final kinetic energy of the system is :

Let is the change in kinetic energy of the system after the collision. It is given by :

So, the change in kinetic energy of the system is 160.89 Joules.

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explanation:

b.

explanation: