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{"ops":[{"insert":"3. A\u00a0truck of mass 2000kg, moving at 20m\/s, collides with a car of mass 1000kg, which is stationary. What is the velocity of the car after the collision if the truck now moves\u00a0\nforward at 10m\/s ?\n\n4.A skater of mass 70 kg is moving at 4 m\/s when he bumps into a skater of mass 50 kg who is not moving.\u00a0\u00a0They move off together on the ice.\u00a0\u00a0What is their velocity immediately after the collision?\n\n5.In a game of bowls one particular bowl hits the jack head on causing it to move forward. The jack has a mass of 300 g and was originally stationary.\u00a0\u00a0The bowl has a mass of 1 kg and was moving at a speed of 2 m\/s before hitting the jack, but continued forwards at 1.5 m\/s after the collision.\u00a0\u00a0What is the speed of the jack after the collision?\n\n6.State Newton\u2019s Third Law\n\n\n"}]}
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