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# Momentum

what is the conservation of energy? energy can neither be created or destroyed, only its form can be changed
what is the definition of work done? work done = force ( in the direction of movement) x distance moved
what is the unit of energy? the joule
What is the definition of power? energy converted / time taken
what is gravitational potential energy? energy due to an objects position.
Momentum is defined as? mass x velocity
what is the unit of power? watts or joule / sec
power = force x ? velocity
state Newton's first law in class.
how is Ke calculated? 1/2 x mass x (velocity) 2
State Newton's second law in class
what are the units for momentum Ns or kg m/s
what is the definition of one newton? in class.
what is the KE of an object energy due to the objects motion.
mathematically, what is Newton's second law? f = m (dv / dt)
what is the definition of impulse? F x t = change in momentum.
How can the change in momentum be found from the F vs t graph of an object? the area under the graph.
state Newton's 3rd law in class
Created by: pvirdi