Question

Blocks A and B are moving along the x axis and are heading toward each other. Block A has a mass of 2.0 kg and a velocity of +32 m/s, while block B has a mass of 4 kg and a velocity of -28 m/s, where the plus and minus sign indicate the direction of motion. They suffer a completely inelastic, head-on collision and no external forces act on them. Let KE? be the total kinetic energy of the two-block system before the collision and KE? be the total kinetic energy of the two-block system after the collision. Which statement is true? a) KE? > KE? b) KE? < KE? c) KE? = KE?

          Blocks A and B are moving along the x axis and are heading toward each other. Block A has a mass of 2.0 kg and a velocity of +32 m/s, while block B has a mass of 4 kg and a velocity of -28 m/s, where the plus and minus sign indicate the direction of motion. They suffer a completely inelastic, head-on collision and no external forces act on them.

Let KE? be the total kinetic energy of the two-block system before the collision and KE? be the total kinetic energy of the two-block system after the collision. Which statement is true?

a) KE? > KE?
b) KE? < KE?
c) KE? = KE?

Blocks A and B are moving along the x axis and are heading toward each other. Block A has a mass of 2.0 kg and a velocity of +32 m/s, while block B has a mass of 4 kg and a velocity of -28 m/s, where the plus and minus sign indicate the direction of motion. They suffer a completely inelastic, head-on collision and no external forces act on them.

Let KE? be the total kinetic energy of the two-block system before the collision and KE? be the total kinetic energy of the two-block system after the collision. Which statement is true?

a) KE? > KE?
b) KE? < KE?
c) KE? = KE?

Added by Patrick P.

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