Newton's first law of motion is often stated as: An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force . Based on Newton’s 1st Law describe a real-world scenario where you would be subject to these forces.
A real-world scenario where you would experience Newton's first law of motion is when you are riding a bicycle on a flat road and suddenly apply the brakes. When you release the brakes on a bicycle, the bike continues to move forward in the same direction with the same speed it had before braking. This is because of the inertia associated with Newton's first law.
In this scenario, let's break down the explanation into three parts:
1. Object in Motion: When you are riding the bicycle, you and the bike are considered as a single object in motion. You have a certain speed and direction while moving forward.
2. Unbalanced Force: When you apply the brakes, you create an unbalanced force by exerting pressure on the brake pads. This force opposes the motion and tries to slow down or stop the bicycle.
3. Object Stays in Motion: Despite the applied force, according to Newton's first law, the object (in this case, the bicycle) will continue to move in the same direction and with the same speed (or velocity) unless acted upon by an unbalanced force. Therefore, even after applying the brakes, the bicycle will keep moving forward, but its speed will gradually decrease until it eventually comes to a stop.
It's worth noting that in this scenario, the frictional force between the tires and the road is the force responsible for decelerating the bicycle. This force acts in the opposite direction to the motion and eventually brings the bicycle to a stop. The inertia of the bicycle keeps it moving forward until the unbalanced force (brakes and friction) slows it down and brings it to rest.