A 100 Kg Mass, Initially at Rest, Is Blown Apart

question 63

Multiple Choice

A 100 kg mass, initially at rest, is blown apart into two 50.0 kg pieces. After the blast, the two masses are moving apart with a relative velocity of 100 m/s. The total kinetic energy after the explosion is

• A) 8.42 × 10⁴ J.
• B) 1.25 × 10⁵ J.
• C) 3.62 × 10⁵ J.
• D) 6.50 × 10⁵ J.
• E) 1.24 × 10⁶ J.

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Definitions:

Absolute Dating

A method of determining the specific date of an archaeological or paleontological site or artifact, using techniques such as radiometric dating.

Relative Dating

A technique used in archaeology and geology to determine the chronological sequence of historical or geological events by comparing them to other events.

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