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A 5 kg object is moving at a velocity of 2 m/s. Calculate its kinetic energy.
Solution:
A 20 N force is applied to a block, causing it to move 3 m to the right. Calculate the work done on the block.
where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height of the object above the ground.
Efficiency = (Work done / Energy input) × 100% = (980 J / 2000 J) × 100% = 49%
W = F × s = 50 N × 2 m = 100 J
W = F × s
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A 5 kg object is moving at a velocity of 2 m/s. Calculate its kinetic energy.
Solution:
A 20 N force is applied to a block, causing it to move 3 m to the right. Calculate the work done on the block.
where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height of the object above the ground.
Efficiency = (Work done / Energy input) × 100% = (980 J / 2000 J) × 100% = 49%
W = F × s = 50 N × 2 m = 100 J
W = F × s
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