mass and weight
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units of mass: gram (g) - kilogram (kg) -tongram : equal to mass of paper clipkilogram: is equal to mass of one liter of water.
note:2kg=............liters=............grams
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1 Newton =100 grams , 2 N = 200 grams
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note: weight increase as mass increase and vice verse.
2- mass = weight /10
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as mass of planet increase as weight increase why? due to gravitional force increase
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weight decrease as the object move away from the centre of the planet bec thegravitational force of the planet decrease as object move away.
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