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bulgar [2K]
3 years ago
14

A hammer of mass m falls from rest off of a roof and drops a height H onto your head.

Physics
1 answer:
belka [17]3 years ago
6 0
For conservation of energy we have to:
 mgH=mv²/2 
 Clearing
<span> v=sqrt(2gH)
 Then, by definition 
</span><span> F=Δp/Δt= Δ(mv)/ Δt=m Δ(v)/Δt= 
</span> =m[sqrt(2gH)-0]/Δt= m[sqrt(2gH)]/ Δt
 the answer is
 F=m[sqrt(2gH)]/ Δt
 
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What is the height of a building that an object is dropped from if it has a mass of 3 kg and hits the ground with a velocity of
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Answer:

125 m

Explanation:

m = 3kg

v = 50m/s

u = 0m/s

a = +g = 10m/s²

s = H = ?

using the formula,

v² = u² + 2as

50² = 0² + 2(10)(H)

2500 = 20H

H = 2500/20

H = 125m

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Suppose you want to test the hypothesis that plants grow taller when they receive more sunlight. Identify and independent variab
ollegr [7]
The result that should be established is in the form
y = f(x) 
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Answer:
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Hope this helps! :)
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Learn more about nuclear fusion here:

brainly.com/question/10165218

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8 0
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