hmax = V^2/2g = 400/20 = 20m
yg ditanya Ek saat 10m
V saat 10m :
Vt^2 = vo^2 - 2gh
Vt^2 = 400 - 2.10.10 = 400 - 200 = 200
Vt = √200
Ek = 1/2 m.v^2 = 0,3.200/2 = 30J
jawabanya B
m=0,3kg
v=20m/s
g=10m/s²
Ek pada saat 1/2 Tinggi maksimumnya__?
jawab:
Ek maks=1/2×m×v²
=1/2×0,3×20²
=1/2×0,3×400
=60J
karena Ep maks=Ek maks maka:
Ep=Ek=60
m×g×h=60
0,3×10×h=60
h=20m
^^Ek pada ketinggian 1/2h^^
Ek=Ep=m×g×h
=0,3×10×1/2×20
=30J
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hmax = V^2/2g = 400/20 = 20m
yg ditanya Ek saat 10m
V saat 10m :
Vt^2 = vo^2 - 2gh
Vt^2 = 400 - 2.10.10 = 400 - 200 = 200
Vt = √200
Ek = 1/2 m.v^2 = 0,3.200/2 = 30J
jawabanya B
m=0,3kg
v=20m/s
g=10m/s²
Ek pada saat 1/2 Tinggi maksimumnya__?
jawab:
Ek maks=1/2×m×v²
=1/2×0,3×20²
=1/2×0,3×400
=60J
karena Ep maks=Ek maks maka:
Ep=Ek=60
m×g×h=60
0,3×10×h=60
h=20m
^^Ek pada ketinggian 1/2h^^
Ek=Ep=m×g×h
=0,3×10×1/2×20
=30J