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4. A book falls off the desk. What moves the book towards the floor? *
A. mass
B. friction
C. gravity
D. speed


Sagot :

Answer:

D po

Explanation:

correct me if im wrong po

Answer:

A.

Explanation:

The book's potential energy can be released by knocking it off the table. As the book falls, its potential energy is converted to kinetic energy. When the book hits the floor this kinetic energy is converted into heat and sound by the impact.