click below
click below
Normal Size Small Size show me how
Physics Chap4
Homework questions
Question | Answer |
---|---|
Define work and give the formula. | Work is the product of a force exerted on an object and the distance the object moves in the direction of the forces. w= Fxd |
What are the necessary conditions for work to be done? | Force acting on the object is perpendicular to the motion. |
What is the formula used for calculating work done against the force of gravity? | w= Wtxh |
Define power. | The rate of doing work and can be expressed P=w/t |
Define energy. | An objects ability to do work. |
How Newton's second law of motion expressed? | F=mxa |
Define Mass. | The quantity of matter contained by an object. |
Define acceleration. | the rate of change of velocity; linear distance per time. |
Define velocity. | a measure of linear distance per time |
Define force. | a vector that produces or prevents motion. |
Define potential energy and give the formula. | Energy of an object due to its position of configuration. PE=mxgxh |