What is the mass of an object that weighs 9.80 KN at sea level?
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Explanation:
First, what is a Newton? It is defined as the force equal to applying an acceleration of 1m/s² for a mass of 1kg.
Second, using F = MA, then M = F/A. The acceleration of gravity at sea level is 9.8m/s². So,
m = (9.8)(1m/s²)(1kg) / (9.8m/s²) or, because the 9.8s cancel out as do the units m/s², we're left with the answer M = 1kg.
Mass is mass. 1kg of mass on Earth is 1 kg of mass anywhere else. To find the weight, you need to apply the gravitational constant for that body.
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