Energy, Work & Power
click to edit
𝓹𝓸𝔀𝓮𝓻
𝓮𝓷𝓮𝓻𝓰𝔂
Energy is the strength and vitality required for sustained physical or mental activity
𝔀𝓸𝓻𝓴
Work is an activity involving a force on object and the distance traversed by the object due to the force. It can be measured by the change in energy.
Power is how quickly energy is used ot transferred. Power is typically measured in units of joules per second.
force applied x distance moved
Thermal / heat energy
Kinetic energy
Light energy
Gravitational potential energy
Sound energy
Chemical potential energy
Nuclear energy
Electrical energy
Elastic potential energy
Opening the door
Lifting groceries.
Climbing up stairs
Throw ball
work divided by time taken to do the work
Rock ckimbing
Lifting weight
:
force x distance x cos(θ)
Push ups
