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abruzzese [7]
3 years ago
13

PHYSICS I need help with number two!!!!

Physics
1 answer:
EleoNora [17]3 years ago
7 0

Answer:

mgh₁ + ½mv₁² = mgh₂ + ½mv₂²

Explanation:

Initial total energy = final total energy

PE₁ + KE₁ = PE₂ + KE₂

mgh₁ + ½mv₁² = mgh₂ + ½mv₂²

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If someone walkes 1000m <br> in 20min, what is their speed?
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Answer:

Distance - 1000m

Time - 20min

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Use the formula of distance ÷ time = speed.

s = d/t

s = 1000m/20min

s = 50 m/min

Hope this helps, thank you !!

6 0
2 years ago
What kind of friction exists between solid objects moving in water?
eduard
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3 years ago
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blank

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The Zeeman effect, in which energy levels of electrons are shifted and produce a corresponding split in spectral lines observed,
blagie [28]

Answer:

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3 0
2 years ago
A wave has a frequency of 450 Hz and a wave length of 00.52 m what is the speed of the wave?
nata0808 [166]
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                                     =      234 m/sec .
4 0
3 years ago
Read 2 more answers
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