It's 120N downwards. net force is adding or subtracting the x and y values
The first one is revolves
A. Pitch
okay bye have a nice day
From: Charli
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
100/5= 20, 20 seconds is the time needed.