momentum + impulse + wep Flashcards

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1
Q

linear momentum

A

the product of the mass and velocity of the object
p=mv

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2
Q

newtons 2nd law in terms of momentum

A

the net force acting on an object is equal to the rate of change of momentum
Fnet.t = m(delta)v

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3
Q

law of conservation of linear momentum

A

the total linear momentum of an isolated system remains constant (is conserved)
pi= pf

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4
Q

isolated system

A

a system free from the influence of a net external force that alters the momentum of the system

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5
Q

elastic collision

A

both momentum and kinetic energy are conserved

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6
Q

inelastic collision

A

only momentum is conserved

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7
Q

work

A

product of the displacement and the component of the force parallel to the displacement

done BY a force ON an object

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8
Q

work energy thereom

A

the work done by a net force on an object is equal to the change in kinetic energy of the object

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9
Q

kinetic energy

A

the energy an object has as a result of the objects motion

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10
Q

potential energy

A

the energy an object possesses due to its position relative to a reference point

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11
Q

law of conservation of energy

A

total energy in a system cannot be created nor destroyed; only transformed from one form to another

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12
Q

mechanical energy

A

the sum of the gravitational and kinetic energy of a body at a point

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13
Q

principle of conservation of mechanical energy

A

in the absence of air resistance or any external forces , the mechanical energy of an object is constant

(only for isolated systems)

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14
Q

gravitational potential energy

A

the energy an object possesses due to its position relative to a reference point

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15
Q

gravitational potential energy

A

the energy an object possesses due to its position relative to a reference point

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16
Q

power

A

the rate at which work is done or the rate at which energy is transferred