What is the change in kinetic energy of the fancart over this 1.5 second interval?

By Allen Kazadi
1 Min Read

A fancart of mass 0.8 kg initially has a velocity of < 0.8, 0, 0 > m/s. Then the fan is turned on, and the air exerts a constant force of < −0.4, 0, 0 > N on the cart for 1.5 seconds. What is the change in kinetic energy of the fancart over this 1.5 second interval?

Answer:

The change in kinetic energy of the fancart over 1.5 second time interval is -0.255 J

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