A 25-Kg Box Is Sliding Down an Ice-Covered Hill

question 55

Multiple Choice

A 25-kg box is sliding down an ice-covered hill. When it reaches point A, the box is moving at 11 m/s. Point A is at the bottom of a circular arc that has a radius R = 7.5 m. What is the magnitude of the normal force on the box at Point A?

• A)250 N
• B)280 N
• C)400 N
• D)650 N
• E)900 N

---

Definitions:

Indirect Object-Direct Object Constructions

Grammatical structures in sentences where an action is performed by the subject on two objects, with the indirect object typically receiving the direct object.

Passive Sentences

Sentences where the subject is the recipient of the action rather than the doer, often characterized by the use of forms of the verb "to be" followed by a past participle.

Vocabulary Development

The process of learning and acquiring new words and phrases to communicate effectively in a language.

Heredity

The genetic transmission of characteristics from parents to their offspring, affecting traits such as height, eye color, and susceptibility to certain diseases.