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2. A 50.0 g bullet is moving at 420 m/s. If the bullet strikes a 2.2 kg block initially at rest and the bullet sticks to the block, find the initial velocity of both the bullet and the block. m1=50g AP = myf -m - V1= 420m/s ma = 2.2 kg V2=Oml's A 9.3 m/5 3. For the previous problem, find the initial velocity of the block if the bullet passes through the block and leaves at 300 m/s. A 2.7 m/s 4. A 0.600 kg ball is traveling at 60.0 m/s and collides with a 1.20 kg ball moving in the opposite direction at 12.0 m/s. The 0.600 kg ball moves away at - 10.0 m/s. Find the velocity of the second ball. A 23 m/s 5. A 1000 kg wagon is moving at 2.0 m/s and collides with a 800 kg wagon moving at 0.8 m/s and both wagons stick together. If both continue in the same direction, find their velocity. A 1.5 m/s 6. An astronaut at rest in space with a mass of 90.0 kg, fires a rocket that expels 50.0 g of gas at 900 m/s. Find the velocity of the astronaut after firing the shot. - 0.5 m/s