I got a few questions that I need to be checked please?
Why does a brick weigh 1 kilogram. Explain.
-Would it be cause there are not other forces acting on it that's why it weighs 1 kilogram?
Why do lurch foward when a bus slows down? What law is this?
-Is it because the bus is still in motion and you are at rest causing you to lurch foward. It is Newtons first law: the law of intertia
yes and yes
For the first one, look up weight and the gravitational force of the earth.
For #2, inertia is ok but the reasoning is wrong. The bus is moving a some speed and the passengers in the seats are moving at the same speed (perhaps I should be saying velocity). When the bus slows down to, say, half that speed, the passengers still are going at the original speed so they try to move forward. That's why the lurch is forward. That's why a head on collision is so deadly. The two cards stop within the blink of an eye BUT the two drivers of the two vehicles keep moving--often through the windshield.
Certainly! Let's break down each question and find the explanations to your questions:
1. Why does a brick weigh 1 kilogram?
The weight of an object is determined by the force of gravity acting upon it. The weight of an object can be calculated by multiplying its mass by the acceleration due to gravity (approximately 9.8 meters per second squared on Earth). So, to find out why a brick weighs 1 kilogram, we need to understand its mass.
The mass of an object is the amount of matter it contains. In the International System of Units (SI), the base unit for mass is the kilogram (kg). So, a brick is said to weigh 1 kilogram because its mass is 1 kilogram. The reason behind the mass of a brick being 1 kilogram could vary depending on the specific dimensions and materials used in its construction. However, it is important to note that the weight of an object can change based on gravitational forces, such as in different locations on Earth or in space.
2. Why do you lurch forward when a bus slows down? What law is this?
When a bus slows down, you may experience a tendency to lurch forward. This phenomenon can be explained by Newton's first law of motion, known as the law of inertia.
Newton's first law states that an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity unless acted upon by an external force. In this case, as the bus decelerates or slows down, the force acting on your body is no longer being balanced by the forward motion of the bus. As a result, your body tends to maintain its forward momentum and continues to move forward even though the bus is slowing down. This causes you to lurch forward.
It is important to note that this lurching forward phenomenon can be mitigated or reduced by wearing seat belts or maintaining contact with a stable object in the bus. These precautions help ensure that the external forces acting upon your body are counteracted, thus minimizing the effect of inertia.
I hope these explanations help clarify your questions! If you have any further queries, feel free to ask.