DIRECTIONS: Read the notes carefully and use them to help you answer the questions.

Newton's First Law (Law of Inertia): Objects don’t change their motion unless a force acts on them. This means an object at rest stays at rest, and an object in motion keeps moving at the same speed and direction unless something (like friction or a push) makes it speed up, slow down, or change direction.

Newton's Second Law (Law of Acceleration): This law explains how force affects motion. The greater the force applied to an object, the faster it accelerates. The heavier (or more massive) the object, the more force it takes to change its speed or direction.

Newton's Third Law (Action and Reaction): For every action, there is an equal and opposite reaction. This means that when you push on something, it pushes back on you with the same amount of force in the opposite direction. For example, when you jump off the ground, the ground pushes you up while you push down on it.

These laws help explain why and how objects move or stay still based on the forces acting on them.

QUESTION #1: Match the following scenarios with the Newton's Law that it is describing.

(3 points)
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When driving in a car, more force (pressing the gas pedal harder) increases the car’s acceleration.
When driving in a car, the tires push back on the road, and the road pushes the tires forward, allowing the car to move.
When driving in a car, the car stays in motion unless the brakes (a force) stop it.

2 answers

Here are the matches based on the scenarios described:

  1. When driving in a car, more force (pressing the gas pedal harder) increases the car’s acceleration.
    Match: Newton's Second Law (Law of Acceleration)

  2. When driving in a car, the tires push back on the road, and the road pushes the tires forward, allowing the car to move.
    Match: Newton's Third Law (Action and Reaction)

  3. When driving in a car, the car stays in motion unless the brakes (a force) stop it.
    Match: Newton's First Law (Law of Inertia)

QUESTION #2: Imagine you’re riding in a car that suddenly stops. You keep moving forward until the seat belt catches you. Which statement best explains what happens, based on Newton's First Law?(1 point)
Responses

The car keeps moving forward because no force is acting on it.
The car keeps moving forward because no force is acting on it.

The car stops, and you stop at the same time because of inertia.
The car stops, and you stop at the same time because of inertia.

You keep moving forward because objects at rest stay at rest.
You keep moving forward because objects at rest stay at rest.

You keep moving forward because objects in motion stay in motion unless acted on by a force.