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m1=85 kg
V1=7 m/s
m2=105 kg
V2=0 m/s
Dit :
v'=...?
Peny :
e=-[V1'-V2'/V1-V2]
0=-[V1'-V2'/7-0]
0=-V1'+V2'
V2'=V1'=V'
m1 v1 + m2 v2 = m1 v1' + m2 v2'
85 7 + 105 0 = 85 v' + 105 v'
595=190 v'
v'=3,13 m/s
∴ Kelajuan pemain tepat saat bertumbukan adalah 3,13 m/s
Semoga Membantu
V = 85 × 7 / (85 + 105) = 3,13 m/s