anonymous
  • anonymous
A pulling force of 150n is exerted on a car to move it horizontally by 5m. A friction force opposes the motion of the car.
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
A- calculate the work done by the pulling force B- calculate the work done by the friction force if the car gains 500J of KE c- calculate friction force
anonymous
  • anonymous
d- does the work done by the friction force get larger or smaller if the distance the car is moved by it increased
anonymous
  • anonymous
do W=Fd

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anonymous
  • anonymous
what about having the kinetic energy?
anonymous
  • anonymous
\[W = F \cdot d = \Delta KE + \Delta PE\]
anonymous
  • anonymous
a) use W=force times diplacement b) use work kinetic energy theorem i.e work done by all forces = change in kinetic energy. c) once u get work done by friction force, use the same eqn W=Fd

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