Force and Motion Notes

University:
Eastern Kentucky University
Course:
PHY 131 | College Physics I
Academic year:

2023
Views:

171

Pages:

2
Author:

hesmyonlyonehcg

Force and Motion Potential and Kinetic Energy: As stated previously, energy is the ability to do work. It cannot be created nor destroyed. Potential Energy: the energy that is stored in an object that is still ❖ An object has more (gravitational) potential energy if it is at a higher elevation Kinetic Energy: the energy that is stored in a moving object ❖ An object has more kinetic energy if has a greater mass or it’s moving at a greater speed Forces of Motion: Balanced forces cause objects to not speed up, slow down, or change directions. Unbalanced forces speed up, slow down, or change the directions of an object. The net force of an object is the sum of all the forces acting upon it. Friction also plays a role in the movement of an object. Friction is the resistance an object may or may not experience when moving or being moved. It can cause an object to slow down as it moves. An Unbalanced Force: Distance, Speed, and Time: To find the speed an object is traveling at, one must divide the distance the object moved by the amount of time it was traveling. Simple Machines: Simple machines are devices invented to reduce the amount of work one has to do. There are six simple machines... ● The inclined plane is used to raise heavy objects ● The lever is used to slightly lift a heavy object ● The wedge is used to split, lift, and tighten objects ● The wheel and axle are used together to raise heavy objects ● The pulley is used to lift and transport objects ● The screw is used to fasten and tighten objects