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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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