A 10-G Bullet Moving Horizontally with a Speed of 1

question 80

Multiple Choice

A 10-g bullet moving horizontally with a speed of 1.8 km/s strikes and passes through a 5.0-kg block initially at rest on a horizontal frictionless surface. The bullet emerges from the block with a speed of 1.0 km/s. What is the kinetic energy of the block immediately after the bullet emerges?

• A) 8.0 J
• B) 6.4 J
• C) 5.3 J
• D) 9.4 J
• E) 10 J

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Definitions:

Set Point Theory

The theory that the body regulates its weight and energy levels around a biologically predetermined point.

Metabolic Rate

The rate at which the body uses energy to maintain basic life functions.

Body Weight

The total mass of an individual, measured in units such as pounds or kilograms, often used as an indicator of health.

Brown Fat

A type of body fat that is activated when cold, burning calories to generate heat and help maintain body temperature.