A 120-G Rubber Ball Is Thrown with a Speed of 10

question 57

Multiple Choice

A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car which is approaching at 30 m/s, and undergoes a one-dimensional elastic collision with the car. What is the speed of the ball after the collision?

• A) 10 m/s
• B) 30 m/s
• C) 40 m/s
• D) 50 m/s
• E) 70 m/s

---

Definitions:

Promised Offer

An offer made by one party to another indicating a willingness to enter into a contract under specified terms.

UCC

The Uniform Commercial Code is an extensive collection of statutes that regulate all business dealings within the United States.

Means Acceptance

The acceptance of an offer in contract law through the performance of the conditions stated in the offer, thus creating a binding contract.

Mailbox Rule

A legal principle stating that an offer is considered accepted once the acceptance is dispatched (e.g., mailed), not when it is received by the offeror.