A 500-G Bullet Is Fired into a 900-G Block of Wood

question 64

Multiple Choice

A 5.00-g bullet is fired into a 900-g block of wood suspended as a ballistic pendulum.The combined mass swings up to a height of 8.00 cm.What was the kinetic energy of the bullet immediately before the collision?

• A)129 J
• B)23.3 kJ
• C)0.709 J
• D)0.355 J

---

Definitions:

Contribution Margin Per Unit

The selling price per unit minus the variable cost per unit, representing the portion of sales revenue that is not consumed by variable costs and contributes to covering fixed costs.

Unit Selling Price

The price at which one unit of a product or service is sold to the customer.

Variable Cost

A variable cost changes in proportion to the level of output or activity, in contrast to a fixed cost which remains constant regardless of activity.

High-Low Method

The high-low method is a statistical technique used in cost accounting to estimate variable and fixed costs based on the highest and lowest levels of activity.