May 2019 1 13 Report
Bola A dan B mempunyai massanya sama 0,7 kg. Jika terjadi tumbukan lenting sempurna, maka kecepatan bola B setelah tumbukan adalah...
a. 0

b. 2 m/s

c. 3 m/s

d. 5 m/s

e. 1 m/s


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