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A person standing on a bus falls forward when the driver applies brakes suddenly. Which law of motion explains this phenomenon?
Newton's First Law
Newton's Second Law
Newton's Third Law
Law of Gravitation
Newton's First Law
Newton's First Law of Motion, also known as the Law of Inertia, states that an object continues in its state of rest or uniform motion in a straight line unless compelled to change that state by an external force. When a bus brakes suddenly, the person's body continues moving forward due to this inertia, causing the fall.
Newton's First Law of Motion, also known as the Law of Inertia, states that an object continues in its state of rest or uniform motion in a straight line unless compelled to change that state by an external force. When a bus brakes suddenly, the person's body continues moving forward due to this inertia, causing the fall.
Think of a passenger on a moving bus like a ball placed on a tray; if you stop the tray suddenly, the ball rolls forward because it wants to keep moving at the same speed it had before.
IN-Motion (Inertia = Newton's 1st).
FnetтАЛ=0тЯ╣v=constant
p=m├Чv
This phenomenon occurs because of 'Inertia of Motion'. The lower part of the body is in contact with the bus and comes to rest along with it, but the upper part of the body remains in a state of uniform motion due to inertia. Consequently, the upper body continues to move forward while the feet stop, causing the person to lean or fall forward.
Inertia is the inherent property of a body to resist any change in its state.
Mass is a quantitative measure of inertia; the greater the mass, the greater the inertia.
Newton's First Law defines the concept of force as that which changes or tends to change the state of rest or motion.
The tendency of the body to resist changes in its state of motion is called Inertia of Motion.
Dusting a carpet by beating it with a stick.
Athletes taking a long run before a jump to gain momentum.
Newton's Second Law relates force to acceleration: F=ma.
Newton's Third Law states for every action there is an equal and opposite reaction.
Law of Gravitation describes the attractive force between masses: F=Gr2m1тАЛm2тАЛтАЛ.
A is correct тАФ Newton's First Law (Law of Inertia) explains why a body in motion resists stopping, causing a forward tilt when the vehicle suddenly brakes.
Always remember: 'Inertia of rest' explains why we fall backward when a bus starts suddenly, and 'Inertia of motion' explains why we fall forward when it brakes.
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