a)
m = P / v
m = 1.75* 10^9 / ( 45* 5 / 18)
m = 1.4* 10^8 kg
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b)
rario = momentum of ship/ momentum of shell
ratio = 1.75* 10^9 / (1075* 255)
ratio = 6384
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comment before rate in case any doubt, will reply for sure.. goodluck
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