“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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