A Super Dart of Mass 20 G, Traveling at $30 ^ { \circ }$

question 111

Multiple Choice

A super dart of mass 20 g, traveling at 350 m/s, strikes a steel plate at an angle of $30 ^ { \circ }$ with the plane of the plate, as shown in the figure. It bounces off the plate at the same angle but at a speed of 320 m/s. What is the magnitude of the impulse that the plate gives to the bullet?

• A) \(4.3 \mathrm {~N} \cdot \mathrm { s }\)
• B) \(300 \mathrm {~N} \cdot \mathrm { s }\)
• C) \(0.30 \mathrm {~N} \cdot \mathrm { s }\)
• D) \(6.7 \mathrm {~N} \cdot \mathrm { s }\)
• E) \(0.52 \mathrm {~N} \cdot \mathrm { s }\)

---

Definitions:

Equity

The value of an ownership interest in property, including shareholders' equity in a corporation, representing the residual value to shareholders after debts and liabilities have been settled.

Efficiency

The ability to accomplish or produce a desired result with the minimum amount of waste, effort, or inefficiency.

Trade-Off

A scenario where one characteristic or element is sacrificed to acquire a different characteristic or element.

Price System

The price system is the mechanism through which prices are determined for goods and services in an economy, facilitating the allocation of resources, signaling what to produce and consume, and coordinating economic activity.