Question

your hypothesis
diagram what you saw happening with the toy car and eraser as the car hit the book

analysis: (answer in complete sentences for full credit)

1. what happened to the small washer and the larger metal ring when the card was moved?
2. was there any difference in how the small washer fell versus the larger ring? explain why do you think there was or wasn’t a difference?
3. describe what happened to both the car and the eraser as the car hit the book.
4. explain why you got the results you did. what law of physics did this demonstrate?
5. provide a labeled diagram of an example of inertia from your life.

Explanation:

1. For question 1: The observation matches the expected outcome of inertia—objects at rest stay at rest when the supporting card is removed quickly.
2. For question 2: The difference comes from inertia and friction; more massive objects need more force to move with the card, so they fall straight down more easily when the card is pulled fast, while lighter ones might be carried slightly if the card is pulled slow.
3. For question 3: The observation aligns with inertia—moving objects stay in motion until a force acts on them.
4. For question 4: All results show that objects resist changes to their motion, which is Newton's First Law (Law of Inertia).
5. For question 5: A common real-life example is a passenger lurching forward when a car stops suddenly, as their body continues moving forward due to inertia.

Answer:

1. The small washer and larger metal ring fell straight down into the cup below when the card was moved quickly.
2. Yes, there was a difference: the smaller washer might be carried a short distance with the card if pulled slowly, while the larger ring falls straight down more easily. This is because the larger ring has more mass, so more inertia—it resists the change in motion from the card's movement better than the lighter washer.
3. When the toy car hit the book (a stopping force), the car stopped moving forward, but the eraser on top of the car continued moving forward due to its inertia, sliding off the front of the car (or staying in the front area of the car as noted).
4. These results occurred because objects tend to resist changes in their state of motion: objects at rest stay at rest (washer/ring falling into the cup) and objects in motion stay in motion (eraser continuing forward when the car stops). This demonstrates Newton's First Law of Motion, also called the Law of Inertia.
5. (Example diagram description, labeled):

• Diagram: A car with a passenger inside, a red arrow labeled "Car stops suddenly" pointing backward on the car, and a blue arrow labeled "Passenger's body lurches forward (inertia)" pointing forward from the passenger.
• Label 1: "Car (sudden stop, force applied)"
• Label 2: "Passenger (continues moving due to inertia)"
• Label 3: "Direction of car's original motion"