A Firecracker Explodes in Midair and Breaks Up into Many

question 106

Multiple Choice

A firecracker explodes in midair and breaks up into many fragments.Which of the following statements are true regarding conditions immediately before and immediately after the explosion?
I.The total momentum of the fragments is equal to the original momentum of the firecracker.
II.The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker.

• A)Statement I only
• B)Statement II only
• C)Both Statement I and Statement II
• D)Neither statement is true.

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Definitions:

Independent T-tests

A statistical test that compares the means of two independent groups in order to determine if there is a statistically significant difference between them.

Statistical Difference

A significant change or discrepancy between groups or conditions that is unlikely to have occurred by chance.

Normally Distributed

Normally distributed describes a statistical distribution that is symmetrical and bell-shaped, characterizing many natural phenomena, where most occurrences take place around the average value, with fewer instances at the extremes.

Negative Correlations

A relationship between two variables in which one variable increases as the other decreases.