The motion of an object launched or thrown horizontally or at any other angle other than 90 degrees with respect to the horizontal, following a parabolic path called trajectory
Momentum Conservation - No net/unbalanced external force acts on the boy-girl system, thus, the total momentum of the system does not change. The momentum gained by the girl is of equal magnitude but opposite direction to the momentum gained by the boy. In this system, no momentum is gained or lost
1. Intake Stroke - The intake valve opens, allowing the cylinder to receive the fuel-air mixture as the piston moves downward
2. Compression Stroke - The piston moves up compressing the fuel-air mixture
3. Power Stroke - The spark plug at the top of the cylinder causes the mixture to ignite and combust making its temperature high. With its increase in temp, the pressure inside increases causing the piston to go down and perform mechanical work
4. Exhaust Stroke - The final stroke and occurs when the exhaust valve is open and the intake valve is closed. Piston movement evacuates exhaust gasses go to the atmosphere
First Law of Thermodynamics - Change in internal energy of a system equals the difference between the heat taken by the system and the work done by the system
3 things that happen in a full cycle: Heat is added, Some of that energy from that input heat is used to do work, The rest of the heat is removed at a relatively cold temperature
Second Law of Thermodynamics - Heat will never of itself flow from a cold temperature to a hot temperature object. Heat naturally flows from hot objects to cold ones. In simpler terms, it means that things tend to balance out; hot things cool down, and cold things warm up, until they reach an equilibrium
Third Law of Thermodynamics - As you keep cooling something down, it gets harder and harder to do so until, theoretically, you reach a point called absolute zero, where it's impossible to cool something down any further. This law helps explain why we can't reach absolute zero temperature, no matter how hard we try