Write a custom energy statement for each question when appropriate: W=Fd P W/At PEg = magh KE = 1/2mv2 1. Fignewton pulls a 500.

Question

Write a custom energy statement for each question when appropriate:
W=Fd P W/At PEg = magh KE = 1/2mv2
1. Fignewton pulls a 500. N sled along a flat snowy path using a rope. He pulls with a force
of 34.6 N on the rope. The sled moves 16.0 m in 3.00 s. What is Eignewton's power
output?
b. Fignewton pulls the sled twice as far in twice the time, what is his power output now?
2. Jewel weighs 580 N and she is sitting on a playground swing seat that hangs 0.40 m
above the ground. Nuton pulls the swing back, with Jewel on it, and releases it when
the seat is 1.00 m above the ground.
Mghi-mghf+1/2mv^2f
Mghi=1/2mu^2f
a. How fast is Jewel moving when the swing moves through the lowest point?
b. If Jewel moves through the lowest point at 2.0 m/s, how much work was done on the
swing by
friction? (hint: solve for thermal energy)

Kunduz · Accepted Answer

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