Kinetic energy – complete the table, make sure you include working Mass (kg) Speed (m/s) 20 300 0.5 17 65 2.9 66 13 1200 40 2 35 26 5 10 4 1 11 Working Type: 0.5 x mass x speed x speed Kinetic energy (J) Kinetic energy – complete the table, make sure you include working Mass (kg) Speed (m/s) 20 300 0.5 17 65 2.9 66 13 1200 40 2 35 26 5 10 4 1 11 Working Type: 0.5 x mass x speed x speed Kinetic energy (J) Kinetic energy – complete the table, make sure you include working Mass (kg) Speed (m/s) 20 300 0.5 17 65 2.9 66 13 1200 40 2 35 26 5 10 4 1 11 Working Type: 0.5 x mass x speed x speed Kinetic energy (J) Extension 1 You might have to convert some units now. 1000g = 1kg So if you have a mass in g, you need to divide by 1000 to get to kg. Mass Mass (kg) USE THIS ONE Speed (m/s) 2000g 30g 500g 4 5 55 110g 55kg 1.5 50 290g 6600g 700g 12000g 30g 990g 7kg 9.5kg 11 3.5 3 6 30 10 8 2 Working Kinetic energy (J) Extension 1 You might have to convert some units now. 1000g = 1kg So if you have a mass in g, you need to divide by 1000 to get to kg. Mass Mass (kg) USE THIS ONE Speed (m/s) 2000g 30g 500g 4 5 55 110g 55kg 1.5 50 290g 6600g 700g 12000g 30g 990g 7kg 9.5kg 11 3.5 3 6 30 10 8 2 Working Kinetic energy (J) Extension 2 Now try these questions. The method is exactly the same, you just need to read what the mass and speed are in the text. Do the working in your book. 1) Lydia drives her car at a speed of 30m/s. If the combined mass of her and the car is 1000kg what is her kinetic energy? 2) Sam rides her bike at a speed of 10m/s. If the combined mass of Sam and her bike is 80kg what is her kinetic energy? 3) Josh is trying to catch a bus and is running at 3m/s. If he has a mass of 60kg how much kinetic energy does he have? 4) A 2000kg car is being driven at a speed of 10m/s. If it doubles its speed to 20m/s what happens to the car’s kinetic energy? a) HINT work out the kinetic energy at 10m/s b) Now work out the kinetic energy at 20m/s c) How much has it increased, has it A Doubled B Halved C Multiplied by four Extension 2 Now try these questions. The method is exactly the same, you just need to read what the mass and speed are in the text. Do the working in your book. 5) Lydia drives her car at a speed of 30m/s. If the combined mass of her and the car is 1000kg what is her kinetic energy? 6) Sam rides her bike at a speed of 10m/s. If the combined mass of Sam and her bike is 80kg what is her kinetic energy? 7) Josh is trying to catch a bus and is running at 3m/s. If he has a mass of 60kg how much kinetic energy does he have? 8) A 2000kg car is being driven at a speed of 10m/s. If it doubles its speed to 20m/s what happens to the car’s kinetic energy? d) HINT work out the kinetic energy at 10m/s e) Now work out the kinetic energy at 20m/s f) How much has it increased, has it A Doubled B Halved C Multiplied by four