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Shalnov [3]
3 years ago
6

A sled starts at rest with 51,450 j of potential energy. after traveling part of the way down the slope, the sled has 32,781 j o

f potential energy. if there is no friction, what is the kinetic energy of the sled?
Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0
In a mechanical system, it is a law that energy should be conserved. In this case, what is the initial energy should be equal to the total energy after the motion happened. We do as follows:

PE(at rest) = KE(during motion) + PE(after motion)
51450 J = KE(during motion)  + 32781 J
KE(during motion) = 18669 J
Dmitrij [34]3 years ago
4 0

Answer:

The Kinectic energy of the sled is 18669j

Step-by-step explanation:

From the above question.

Because the sled starts at rest ,

The total energy of the sled = 51,450j

The potential energy ( P.E) after traveling down the slope = 32,781 j

Total energy = Potential energy + Kinectic Energy

Kinectic Energy = Total energy - Potential Energy

Kinectic energy = 51,450 j - 32,781 j

= 18669j

Therefore, the Kinectic Energy of the sled = 18669j

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3 years ago
Mackenzie practices the piano 609 minutes in 3 weeks. At what rate did she practice, in minutes per day?​
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Step-by-step explanation:

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Answer:

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3 0
2 years ago
Find the area of the largest rectangle (with sides parallel to the coordinate axes) that can be inscribed in the region enclosed
garik1379 [7]
F(x) = 18-x^2 is a parabola having vertex at (0, 18) and opening downwards. 
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Natasha_Volkova [10]

Answer:

Jay's estimate is closer to the actual weight of the basketball

Step-by-step explanation:

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Judging the accuracy of Jay's and Shawna's answer based on their percentage error when compared with the standard, we have that Jay's answer has a lower error as shown below

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