Question

A book falls from a table. If there is no air resistance, what is the acceleration-time graph for this book?

A. Graph B
B. Graph C
C. Graph A
D. Graph D

Answer 1

Answer;

C. Graph A

Explanation;

• A book falling from a table is an example of a free fall, and therefore the motion is under gravitational force as the only force acting on it.
• Additionally, the acceleration of a free falling object is always constant, therefore the acceleration of the book will be a constant 9.8 m/s².
• Therefore, the graph of acceleration against time for the book falling from a table will be a straight horizontal line at the point 9.8 m/s² on the vertical axis.