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Find energy dissipated due to air friction in a thrown ball

  • Thread starter Gashouse
  • Start date
10
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A 0.40 kg ball is thrown vertically upward with a speed of 30 m/s. The ball reaches a height of 40 m. Assuming g= 9.8 m/s^2, the energy dissipated due to air friction is :


F=mgh m=0.40kg, g=10 m/s^2, h=40m, a= 30 m/s

Not sure if I set this problem up right, and since everything is given don't know how to find energy dissipated due to friction.
 

Answers and Replies

OlderDan
Science Advisor
Homework Helper
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Gashouse said:
A 0.40 kg ball is thrown vertically upward with a speed of 30 m/s. The ball reaches a height of 40 m. Assuming g= 9.8 m/s^2, the energy dissipated due to air friction is :


F=mgh m=0.40kg, g=10 m/s^2, h=40m, a= 30 m/s

Not sure if I set this problem up right, and since everything is given don't know how to find energy dissipated due to friction.
Can you calculate the initial energy of the ball, and the energy it has when it reaches the highest point?

F is not mgh. mgh is potential energy.
30 m/s is not acceleration, it is the initial velocity.
 

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