anonymous
  • anonymous
After scoring a touchdown, an 84.0 kg wide receiver celebrates by leaping 1.20m off the ground. - what is the energy he gained by leaping forward?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
A horizontal force of 5.0N acts on a 3.0kh mass over a distance of 6.0m along a horizontal frictionless surface. What is the change in the KE of the mass?
anonymous
  • anonymous
W= F x d
anonymous
  • anonymous
it would be equal to w = mgd?

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anonymous
  • anonymous
|dw:1327642068642:dw||dw:1327642099129:dw|
anonymous
  • anonymous
A 14, 700 N car is traveling at 25.0 m/s. The brakes are applied to stop as per attached figure . The average breaking force is 7100N - how much energy does the car lose in order to stop?
anonymous
  • anonymous
- how much work is done on the car in order to stop it? - how far will it take the car to stop?
anonymous
  • anonymous
All of these make use of the work-energy theorem. \[W = \Delta U\]where \(\Delta U = \Delta KE + \Delta PE\)

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