A Piece of Taffy Slams into and Sticks to Another

question 72

Multiple Choice

A piece of taffy slams into and sticks to another identical piece of taffy that is at rest. The momentum of the two pieces stuck together after the collision is the same as it was before the collision, but this is not true of the kinetic energy, which is partly turned into heat. What percentage of the kinetic energy is turned into heat?

• A) 75%
• B) 0%
• C) 25%
• D) 50%
• E) not enough information given

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Definitions:

Hurricanes

Powerful tropical storms with violent winds and heavy rain, formed over warm ocean waters.

Rainforest

A dense, tropical forest receiving high annual rainfall, home to a vast diversity of flora and fauna.

Drumlin

A commonly teardrop-shaped hill formed when a glacier reshapes glacial deposits.

Roché Moutonnée

A rock formation created by glacial erosion that leaves one side of the rock smooth and polished and the other rugged and plucked.