Question

In the middle of science class, you have a great idea. Being on the fourth floor, you get a friend to watch out the window of the third, second and first floors just beneath you. You have al you friends on a conference call on your cell phone and tell them to let you know when they see a book you drop out you window pass by their window. Which statement is true of the amount of time it takes to pass by each window?

A) the time interval between floors is the same.

B) the time interval between floors becomes less each time.

C) the time interval between floors become more each time.

D) the time interval between floors becomes infinitely long.

Answer 1

B) the time interval between floors becomes less each time.

Step-by-step explanation:

The time interval between floors becomes less each time. Because gravity is accelerating the book, the velocity increases between each floor. This means that the same distance will be covered in less time.

By the way, your book is not a good thing to throw out the window.

Answer 2

As the book falls toward the ground, the time interval between floors becomes smaller, because the book keeps gaining speed and falling faster. That's the acceleration of gravity at work.