The universe, as you may have noticed by now, is a pretty cool place. Physics is really about unwrapping the universe and looking at the beauty underneath—and nowhere is that more evident than in...

Any time a force is applied to an object, its momentum is going to change. This change in momentum is called impulse (abbreviated I). And it really isn't a new quantity at all—just another name f...

While momentum is crucial to our understanding of mechanics, it doesn't tell the whole story. There are whole sets of phenomena that are very hard to describe from an impulse/momentum/force standpo...

So if there's all these forms of energy, we need some way to move between them—Doc Brown figured out a way to turn the kinetic energy of a DeLorean at 88 miles per hour into time travel, so movin...

Collisions in physics come in three flavors:1. elastic collisions, where the kinetic energy of a system is conserved2. inelastic collisions, where kinetic energy is not conserved3. cherryOkay, so t...

Up to this point, physics has been all fun and games, right? Well, time to roll up your sleeves and get down to business. You see, the energy of an object is its ability to do mechanical work. When...

Finally, with our knowledge of momentum and energy, we've reached the end goal of every physics student, aspiring politician, and James Bond villain: unlimited power. And while Auric Goldfinger mig...

Conservation of MomentumMake sure to keep track of every object in a question. If you're trying to find the momentum of two cars after a crash, remember that both cars are probably moving after the...

Conservation of Momentum1. In billiards, all the numbered balls weigh 0.16 kg, but the white cue ball is slightly heavier at 0.17 kg. When a pool shark lines up a shot and sends the cue ball toward...