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Momentum
Question | Answer |
---|---|
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 |