A Ball Attached to a String Starts at Rest and Undergoes

question 13

Multiple Choice

A ball attached to a string starts at rest and undergoes a constant angular acceleration as it travels in a horizontal circle of radius 0.30 m. After 0.65 sec, the angular speed of the ball is 9.7 rad/s. What is the tangential acceleration of the ball?

• A)4.5 m/s²
• B)0.32 m/s²
• C)15 m/s²
• D)7.6 m/s²
• E)28 m/s²

---

Definitions:

Annual Rate

Refers to the yearly interest rate or growth rate applied to investments, loans, or any financial product that calculates earnings or payments over a year.

Inflation

The rate at which the general level of prices for goods and services is rising, eroding purchasing power.

Consumer Price Index

A measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care, used to estimate cost of living changes.

Market Basket

A selected group of goods and services used to track inflation and other economic indicators through price changes.