friction air resistance inertia Solution: Option D is the correct answer Explanation: We know that the container filled with water has more mass and thus more inertia. So, when the smooth paper is pulled away quickly, the container remains stationary due to inertia. As per the Law of Inertia...
Air and Friction Air resistance is a force that acts in the opposite direction of moving objects. This is a fancy way of saying that air resists, or slows, things that are moving. To better understand this concept, let's take a closer look at air itself. Although the space around you ...
One of the biggest questions in physics is why anything exists at all. This is not a question about whether God created the Universe; it's a question about symmetry. In modern cosmology, the Universe came into being at the moment of the Big Bang. As a whole, physicists assume that the...
If an object's kinetic energy is zero, what is its momentum? How does friction obey the law of conservation of momentum? How do you calculate the magnitude of an upward force at the top of a "rollercoaster" with a person sitting in the coaster with a certain weight? W...
Is momentum a form of energy? If the momentum of an object is tripled, its kinetic energy will change by what factor? What is velocity in physics? Is momentum a scalar quantity? How can you increase the momentum of an object? What changes as the momentum of an object changes?
phones, computers, lights, soldering irons, and air conditioners. It's tough to escape it in our modern world. Even when you try to escape electricity, it's still at work throughout nature, from the lightning in a thunderstorm to the synapses inside our body. But what exactlyiselectricity...
I’m going over a chapter on linear momentum in my physics course right now and am somewhat puzzled with what happens with some of the kinetic energy that is lost in a perfectly inelastic collision. Imagine a world without sound, heat, or any non-mechanical forms of energy. Now imagine th...
1. Recovering Energy and Storing It in the Battery Whenever you step on the brake pedal in your car, you are removing energy from the car. The faster a car is going, the more kinetic energy it has. The brakes of a car remove this energy and dissipate it in the form of heat. A hy...
This is only between solid surfaces and strictly does not involve any liquids or gases. Depending upon the varying solid surfaces that exist, it is again divided into four types- Static Friction – both solid surfaces are in motion. E.g., Sliding a box on concrete. Kinetic Friction- both ...
The higher an object, the greater its potential energy. In the Middle Ages, there were weapons called trebuchets, using this principle. Hydroelectricityis created today, using the gravitational potential of water. Weight is a measure of the force of the earth’s gravity on a body. Calculate ...