“A projectile is any object moving with a constant acceleration in one direction and a constant in the other “

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Newton’s first law

"A body will remain at rest, or move with a constant velocity unless acted upon by an unbalanced force"

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Newton’s second law

"The acceleration of an object is directly proportional to the resultant force in the same direction and inversely proportional to its mass"

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Newton’s third law

"If body A, exerts a force on body B, then Body B exerts an equal force but in the opposite direction on Body A"

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Moments of a force

"The product of the force and the perpendicular distance from the point and the point (pivot) to the line of action of the force"

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Principle of moments

"When an object is in a rotational equilibrium, the sum of the clockwise moment is equal to the sum of the anticlockwise moment about any point"

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Work

"Energy- stored ability to do work Work done- (by a constant force) is the product of the force and the distance travelled in the direction of the force "

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Potential energy

“The amount of energy an object possesses due to its height above the ground“

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Kinetic energy

“The energy possessed by an object due to its motion”

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Conservation of energy

“Energy cannot be created or destroyed it can only be changed form to another”

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Power

“The rate of doing work”

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Efficiency

“How good a device is at converting energy from one form to another in an intended way”

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Hooke’s law

“Up to a maximum load, known as the limit of proportionality, the extension of an elastic material is proportional to the applied force”

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Charge

“A current f 1amp is flowing in a circuit is equal to the charge of 1 coulomb passing a fixed point in the circuit every second “

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Electromotive force

“The energy converted into electrical energy when a unit of charge passes through it”

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Potential difference

“Energy generated for every coulomb of charge passing between them”

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Electrical power

“The rate at which energy is converted into other forms of energy by a circuit or a component in a circuit”

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Ohms law

“Current is direly proportional to applied Potential difference at a constant temperature”

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Resistivity

“The resistance of a sample of the material of length 1m and of CSA 1m”

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Super conductors

“A material that loses all electrical resistivity to become a perfect conductor when it falls below the critical (Curie) temperature”

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Other cards in this set

Card 2

Front

"A body will remain at rest, or move with a constant velocity unless acted upon by an unbalanced force"

Back

Newton’s first law

Card 3

Front

"The acceleration of an object is directly proportional to the resultant force in the same direction and inversely proportional to its mass"

Back

Card 4

Front

"If body A, exerts a force on body B, then Body B exerts an equal force but in the opposite direction on Body A"

Back

Card 5

Front

"The product of the force and the perpendicular distance from the point and the point (pivot) to the line of action of the force"

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