A baseball player attempts to use a pitching machine to helphim improve his batt

Question

A baseball player attempts to use a pitching machine to helphim improve his batting average. He places the 50 kg machine on afrozen pond (frictionless surface). The machine fires a 0.15kg baseball horizontally with a speed of 36 m/s. What is therecoil velocity of the machine after firing the first ball? (Hint:Conservation of momentum). Thank you ! A baseball player attempts to use a pitching machine to helphim improve his batting average. He places the 50 kg machine on afrozen pond (frictionless surface). The machine fires a 0.15kg baseball horizontally with a speed of 36 m/s. What is therecoil velocity of the machine after firing the first ball? (Hint:Conservation of momentum). Thank you !

Explanation / Answer

mass of mechine M = 50 kg mass of ball m = 0.15 kg speed of ball v = 36 m / s momentum of the mechine = - momentumof the ball                            MV = - mu from this speed of the mechine V = - mu / M                                                    = - 0.108 m / s

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