diketahui :
m = 300 g = 0,3 kg
v = 20 m/s
g = 10 m/s²
h = 1/2 hmax
ditanya :
Ek di h
jawab :
h max = vo² / 2g
= 20² / ( 2 x 10 )
= 20 m
h = 1/2 h max
= 1/2 x 20
= 10 m
Ek = Ep1 - Ep2
= m . g . ( h max - h )
= 0,3 x 10 x ( 20 - 10 )
= 30 j
jawabannya : b
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diketahui :
m = 300 g = 0,3 kg
v = 20 m/s
g = 10 m/s²
h = 1/2 hmax
ditanya :
Ek di h
jawab :
h max = vo² / 2g
= 20² / ( 2 x 10 )
= 20 m
h = 1/2 h max
= 1/2 x 20
= 10 m
Ek = Ep1 - Ep2
= m . g . ( h max - h )
= 0,3 x 10 x ( 20 - 10 )
= 30 j
jawabannya : b