Question

explore it! part 2a
see if you can get the penny to fall into the cup by quickly removing the card, pulling directly away from the cup.

1. what do you observe?
2. which of newtons laws is represented in this demo?

Explanation:

1. When the card is quickly removed, the penny falls into the cup. This is because the penny initially has a state of rest. When the card is pulled away suddenly, the penny tends to maintain its state of rest (due to inertia) and then falls into the cup under the influence of gravity.
2. Newton's First Law (Law of Inertia) states that an object at rest will remain at rest and an object in motion will remain in motion with a constant velocity unless acted upon by an external force. In this demo, the penny is at rest on the card. When the card is removed quickly (external force acts on the card, not directly on the penny initially), the penny, due to its inertia (tendency to stay at rest), falls into the cup as gravity acts on it.

Answer:

1. The penny falls into the cup when the card is quickly removed.
2. Newton's First Law (Law of Inertia).