A Person Standing on Top of a 40-M High Cliff

question 76

Multiple Choice

A person standing on top of a 40-m high cliff throws a rock with a mass of 0.25 kg off the cliff.The rock leaves the person's hand with a speed of 11 m/s and makes an angle of 75 degrees above the horizontal.What is the kinetic of the rock when it hits the ground at the bottom of the cliff?

• A)98.0 J
• B)300 J
• C)113 J
• D)55 J
• E)84.5 J

---

Definitions:

Project Head Start

Compensatory education designed to provide children from low-income families the opportunity to acquire the skills and experiences important for school success.

Open Education

A form of education that is accessible to anyone, removing barriers such as cost, location, and access to resources, promoting a more inclusive approach to learning.

Montessori

An educational approach developed by Maria Montessori, emphasizing independence, freedom within limits, and respect for a child's natural psychological, physical, and social development.

Reggio Emilia

An educational approach for young children that emphasizes self-directed, experiential learning in a relationship-driven environment.