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Bingel [31]
2 years ago
6

Question 3

Physics
1 answer:
Yuki888 [10]2 years ago
4 0

Answer:

Power = 2.5kW

Explanation:

Given

Mass = 200kg -- mass of tub

Energy = 200,000J

Time = 80s

Required

Determine the amount of power needed

Power is calculated as thus:

Power = \frac{Energy}{Time}

Substitute values for Energy and Time

Power = \frac{200,000J}{80s}

Power = 2500W

Divide by 1000 to convert to kW (kilowatt)

Power = 2.5kW

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7 0
2 years ago
a 1210 kg roller coaster car is moving 6.33 m/s. as it approaches the station, brakes slow it down to 2.38 m/s over a distance o
Stels [109]

Answer:

4960 N

Explanation:

First, find the acceleration.

Given:

v₀ = 6.33 m/s

v = 2.38 m/s

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Find: a

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a = -4.10 m/s²

Next, find the force.

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4 0
3 years ago
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Ilia_Sergeevich [38]
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(I will explain the second question with an example, so it's easier to understand)
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and the energy of the light coming from the sun is also used to make the reaction possible.
7 0
3 years ago
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