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{"ops":[{"insert":"A 40 W motor is now used to launch the rocket at an angle of [R 60 U] (m = 240g), The launcher can fire 5 rockets each second. "},{"attributes":{"italic":true,"bold":true},"insert":"*Neglect air resistance*"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"What work was put into launching a single rocket?\u00a0 (2 marks)"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"What was the speed of the rocket 1.3m above the ground? (4 marks)"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"When the rocket reaches its maximum height, it is 3.4 m above the ground.\u00a0 What is the speed at this height? (2 marks)"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"How high above the ground is the rocket if its speed is 7 m\/s? (2 marks)"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"The rocket ends up hitting a sand castle as it falls towards the ground. If it travels through the castle for 15cm before stopping, determine the average force friction the rocket encounters (2 marks)"},{"attributes":{"list":"ordered"},"insert":"\n"},{"insert":"\n"}]}

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