Jawaban:
d.
Penjelasan:
h= 120 cm= 1.2 m
h'= 80 cm =0.8 m
kecepatan sebelum tumbukan v = √2gh
v=√2x10x1.2
v= √24
v= 2√6 m/s
momentum sebelum = m.v
0.2 x 2√6 = 0.4√6 kgm/s
kecepatan sesudah
v = √2gh'
v = √2x10x0.8
v= 4 m/s
momentum sesudah = m.v
0.2 x 4 = 0.8 kgm/s
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Jawaban:
d.
Penjelasan:
h= 120 cm= 1.2 m
h'= 80 cm =0.8 m
kecepatan sebelum tumbukan v = √2gh
v=√2x10x1.2
v= √24
v= 2√6 m/s
momentum sebelum = m.v
0.2 x 2√6 = 0.4√6 kgm/s
kecepatan sesudah
v = √2gh'
v = √2x10x0.8
v= 4 m/s
momentum sesudah = m.v
0.2 x 4 = 0.8 kgm/s