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PHYSICS 30 MECHANICAL ENERGY QUANTUM 8 ASSIGNMENT DO YOUR WORK ON A .PLEASE PUT A CIRCLE OR .YOU ARE NOT REQUIRED TO W "SIGNIFICANT FIGURES ARE "SHOW ALL YOUR WORK FOR A CONSERVATION OF ENERGY A 45.93 g golf ball is struck by a golf club, and it leaves the face of the club with a speed of 75.0 m/s. [2 marks] How much kinetic energy does the golf ball have as it leaves the face of the club? b. If air friction is ignored, from what height would the same golf ball have to be dropped to gain this much kinetic energy? A rope is hanging from the roof of the gymnasium. You are going to run at the rope, grab it, and see how high you are carried off the floor by the swinging rope. [3 marks] How fast must you run if you want to swing to a height of 1.50 m? Does your mass matter? Does the rope length matter? Discuss your answers! A 260 kg piano is pulled up a frictionless 13 m plank to get it through French doors that are located 5.0 m above the ground. [3 marks] How much GPE (relative to the ground) does the piano have when it is inside the French doors? How much force is needed to push it up the plank? How much force would be necessary to slowly lift the piano straight up? The speed of the car and riders (total mass - 350.0 kg) at the top of the first hill, Point A, is 4.00 m/s. [4 marks] What is the speed at Point B, 5.00 m below Point A. The top of the second hill, Point C, is 8.00 m above Point B. Is the roller coaster moving fast enough to make it to the top of the second hill? Calculate the minimum speed required at Point B in order for the rollercoaster to reach the top of the second hill, Point C. d. Did you need to know the mass of the car and riders in order to answer this question? Explain 8.00 m $.00 mPHYSICS 30 MECHANICAL ENERGY QUANTUM 8 ASSIGNMENT DO YOUR WORK ON A .PLEASE PUT A CIRCLE OR .YOU ARE NOT REQUIRED TO W "SIGNIFICANT FIGURES ARE "SHOW ALL YOUR WORK FOR A CONSERVATION OF ENERGY A 45.93 g golf ball is struck by a golf club, and it leaves the face of the club with a speed of 75.0 m/s. [2 marks] How much kinetic energy does the golf ball have as it leaves the face of the club? b. If air friction is ignored, from what height would the same golf ball have to be dropped to gain this much kinetic energy? A rope is hanging from the roof of the gymnasium. You are going to run at the rope, grab it, and see how high you are carried off the floor by the swinging rope. [3 marks] How fast must you run if you want to swing to a height of 1.50 m? Does your mass matter? Does the rope length matter? Discuss your answers! A 260 kg piano is pulled up a frictionless 13 m plank to get it through French doors that are located 5.0 m above the ground. [3 marks] How much GPE (relative to the ground) does the piano have when it is inside the French doors? How much force is needed to push it up the plank? How much force would be necessary to slowly lift the piano straight up? The speed of the car and riders (total mass - 350.0 kg) at the top of the first hill, Point A, is 4.00 m/s. [4 marks] What is the speed at Point B, 5.00 m below Point A. The top of the second hill, Point C, is 8.00 m above Point B. Is the roller coaster moving fast enough to make it to the top of the second hill? Calculate the minimum speed required at Point B in order for the rollercoaster to reach the top of the second hill, Point C. d. Did you need to know the mass of the car and riders in order to answer this question? Explain 8.00 m $.00 m