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INPULSE 7. Two carts are released with a spring if the 3.2 kg cant moves with a velocity of 28 cm/'s. Find the velocity of the 1.5 kg cart m1 = 3 ma= 1.5kg V1 =0.78 A - D.60 m/'s B. A gun fires a 50.0 g bullet with a velocity of 200 m/s. If the mass of the gun is 0.80 kg, find the recoil velocity of the gun. A - 12.5 m/s 9. A 250 kg cannon fires a 3.0 kg projectile horizontally from a tower located 20.0 m high. If the projectile arrives 150 m away from the tower, find the recoil velocity of the cannon. A - 0.9 m/s 10. A 72 kg rock is blasted into pieces. One piece has a mass of 29 kg and moves North at 33 m/s. Find the velocity of the second piece if it moves South. 11. A tennis player swings her 1.5 kg tennis racquet at 2.0 m/s at a 120 g ball moving in the opposite direction at 12 m/s. The tennis racquet is moving at 0.5 m/s after the hit, how fast is the ball moving