m=1kg
Vo=20m/s
h=5m
Vt²=Vo²-2gh
Vt²=20²-2×10×5
Vt²=400-100
Vt²=300
Vt=
EM=EP+EK
mgh+½mv²
1×10×5+½×1×
50+150
=200J
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m=1kg
Vo=20m/s
h=5m
Vt²=Vo²-2gh
Vt²=20²-2×10×5
Vt²=400-100
Vt²=300
Vt=
EM=EP+EK
mgh+½mv²
1×10×5+½×1×
50+150
=200J