Inertia affects passengers on a bus when it starts suddenly by giving them a jolt and causing the passengers to move forward or backward depending on the buses position.
Mass affects the properties of inertia
Inertia can be useful and harmful to man. A speeding car will be able to maintain some of its speed by inertia, but a sudden stop will violently transfer that inertia to the passengers' bodies.
inertia
inertia
The mass of the object and the velocity of the object.
When the bus driver applies brakes suddenly, the passengers move forward on account of inertia.
When car was moving, passengers were also moving. When car suddenly stops, the moving passengers try to maintain their state of forward motion because of their inertia. so they move forward relative to their seats...
Gravity affects inertia. The lower the gravity, the more inertia.
Mass affects the properties of inertia
Inertia
The amount of mass affects the amount of inertia. The greater the mass, the more inertia it possesses.
The Law of Inertia states that an object in motion remains in motion and an object at rest remains at rest unless and unbalanced, outside force acts upon that object. Because the passengers are "attached" to the bus, they have the same inertia as the bus. But because the passengers are technically seperated, they have their own inertia. So when the bus is slowing down to a stop, the passengers inertia are to keep moving forward. As the bus moves back, the passengers want to keep moving forward. Which is why they lurch forward as the bus decelerates.
Inertia can be useful and harmful to man. A speeding car will be able to maintain some of its speed by inertia, but a sudden stop will violently transfer that inertia to the passengers' bodies.
Inertia
The answer, in short, is INERTIA. Inertia is resistance to changes in motion, and is proportional to mass. Newton's 1st Law of Motion tells us that objects in motion will remain in motion (in a straight line) unless acted upon by an external force. In the example given, the passengers (objects) pitch forward when the driver hits the brakes in a forward-moving car (providing the external force) because their bodies possess inertia separate from the inertia of the moving car. The car slows down due to the braking, but the passengers' separate inertia(s) will cause them to keep moving forward until restrained by an outside force (seatbelt, dashboard, windshield, etc.) Larger, heavier passengers will pitch forward with more force (inertia is proportional to mass, remember?).
inertia
inertia