Kinetic energy and momentum
Work done and energy transferred are measured in joules (J). The work done on an object can be calculated if the force and distance moved are known.
A change in momentum happens when a force is applied to an object that is moving or is able to move. The total momentum in an explosion or collision stays the same.
kinetic energy and momentum
Work, force and distance
work and energy are measure the same unit, joules (J)
work done (joule, J) = force (newton, N) × distance (metre, m)
Potential energy and kinetic energy:
gravitational potential energy- Any object that is raised against the force of gravity stores
elastic potential energy- They can be stretched or squashed, but energy is needed to change their shape. This energy is stored in the stretched or squashed object
kinetic energy- The more mass an object has, and the faster it is moving, the more kinetic energy it has.