A rifle with a weight of 40 N fires a 5.5 g bullet with a speed of 200 m/s.(a) Find the recoil speed of the rifle.(b) If a 725 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
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A rifle with a weight of 40 N fires a 5.5 g bullet with a speed of 200 m/s.(a) Find the recoil speed of the rifle.(b) If a 725 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.

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- A 4.00 g bullet has a muzzle velocity of 230 m/s when fired by a rifle with a weight of 40.0 N. (a) Determine the recoil speed (in m/s) of the rifle. Choose a sign convention and see if you can write a statement of conservation of momentum that will allow you to determine the desired quantity. Don't forget that you have been given the weight rather than the mass of the rifle. m/s (b) If a marksman with a weight of 775 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. Your approach to part (a) will also work for part (b). The only difference is that the mass of the marksman must now be included. m/sA 5.00 g bullet has a muzzle velocity of 250 m/s when fired by a rifle with a weight of 25.0 N. (a) Determine the recoil speed (in m/s) of the rifle. m/s (b) If a marksman with a weight of 725 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. m/sAn unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First he tries to throw a rope to his fellow astronaut, but the rope is too short. In a last ditch effort, the astronaut throws his bag of tools in the direction of his motion, away from the space station. The astronaut has a mass of ma = 102 kg and the bag of tools has a mass of mp = 19.0 kg. If the astronaut is moving away from the space station at Vj = 2.10 m/s initially, what is the minimum final speed vp.f of the bag of tools with respect to the space station that will keep the astronaut from drifting away forever? Ub.f = m/s
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