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6 / A 25a bullet with a velocity of 380 m/s passes through a 5 mm film and exits the film with a kinetic energy of 550 J . what is the force of the film needed to slow down the bullet 1 A 65 kg boy running at 5.8m/s grabs a rope that is hanging vertically . How high will the bay swing ) A 20ookg locomotive is running at 316m/s towards East and hits a 2500 kg locomotive . The 2500 kg locomotive goes East with at 1, 5m/s and the other goes west at - Dismiss . Find the original velocity of the 2000 kg locomotive 11) A hydroelectric produces 380 MW of electricity. If the turbines are located 50 down from the dam, calculate the flow of water in cubic metter perp second. ( 1 cubic meter = 10DOL ) ( Density of water 1.00) (1 Megawatt= 106 watts ) 12) A rock blasted into 3 pieces. Piece A is 3. 5 kg with a velocity of 15.3 m/s in the direction 450 N of W. Piece B is 2.8 kegg with a velocity of 23.8 mls in the direction 50 5 of W. Piece ( is 3 . 7 kg. Find the velocity and direction of piece C I How long would it take a 130,000 W construction crane to lift a 3200 kq bundle of steel a verticle distance of 120 m 3 ) What is the total work needed to be done by a pump to transfer 40000L of canola oil ( density 0 . 9 2 g/ ml ) to a storage facility located 60 m high 4) A 65 kg girl is running at a speed of 4.2m/s, She grabs on to a rope which is hanging from the ceiling and swings from the end of the rope . How high from the ground she will swing 7 / A T. V is left on during the whole day. The power rating is 200 W. How much money do . we spend a year if the cost of electricity is 0. 0627 # kw. h 8) A 60 W light bulb is only 5% efficent in converting electrical energy into light energy . After 5 hours how much light energy has been produced 10 Explain with physics terms and numerical example the concept behind an airbag 11/ Why is impulse called change in momentum