What is a kilojoule?
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{"type":"multi-choice","id":"7161","dataJson":{"type":"multi-choice","slide_id":42417,"key":7161,"prompt":"\u003cp\u003eWhat is a kilojoule?\u003c/p\u003e","validResponse":[7731],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"to use or swap the place of something","value":7735,"fileboyId":"ab81a55f-a565-4904-8f60-d0536ab4e9c2"},{"label":"the unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre","value":7732,"fileboyId":"b55de4fa-7ccd-4453-84c4-305591ac6f7c"},{"label":"the unit of energy. 1 kilojoule = 1000 joules ","value":7731,"fileboyId":"5b282582-3b28-4f69-be36-8ba1caa1521c"},{"label":"a unit of distance equal to 1,000 metres (approximately 0.62 miles)","value":7733,"fileboyId":"87ff051a-5305-4711-9b10-bfed32df7a52"},{"label":"relating to motion","value":7734,"fileboyId":"2e601ac7-9e57-4d8f-806b-443d40536339"}],"question_data":{"body":"Here's the equation; remember you need to learn this. Kinetic energy is 0.5, multiplied by the mass, multiplied by the speed squared. The mass is 100 kilograms, and the speed is 15 metres per second. Putting these numbers into the equation gives us a kinetic energy of 11,250 joules. Dividing this by 1,000 gives us 11.25 kilojoules. ","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/c8d8c6f8-d5bf-4bf6-b42a-bb99462fb727?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What does substitute mean?
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{"type":"multi-choice","id":"7165","dataJson":{"type":"multi-choice","slide_id":42416,"key":7165,"prompt":"\u003cp\u003eWhat does substitute mean?\u003c/p\u003e","validResponse":[7735],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre","value":7732,"fileboyId":"b55de4fa-7ccd-4453-84c4-305591ac6f7c"},{"label":"the unit of energy. 1 kilojoule = 1000 joules ","value":7731,"fileboyId":"5b282582-3b28-4f69-be36-8ba1caa1521c"},{"label":"a unit of distance equal to 1,000 metres (approximately 0.62 miles)","value":7733,"fileboyId":"87ff051a-5305-4711-9b10-bfed32df7a52"},{"label":"to use or swap the place of something","value":7735,"fileboyId":"ab81a55f-a565-4904-8f60-d0536ab4e9c2"},{"label":"relating to motion","value":7734,"fileboyId":"2e601ac7-9e57-4d8f-806b-443d40536339"}],"question_data":{"body":"Here's a question for you to try. A cyclist and a bike have a total mass of 100 kilograms and a speed of 15 metres per second. Calculate the kinetic energy. If you were to substitute the cyclist with a heavier cyclist - so the total mass became 110 kilograms - what impact would this have?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/44f12d5d-d3e1-458e-9232-911e27437b47?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a kilometre?
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{"type":"multi-choice","id":"7163","dataJson":{"type":"multi-choice","slide_id":44480,"key":7163,"prompt":"\u003cp\u003eWhat is a kilometre?\u003c/p\u003e","validResponse":[7733],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre","value":7732,"fileboyId":"b55de4fa-7ccd-4453-84c4-305591ac6f7c"},{"label":"the unit of energy. 1 kilojoule = 1000 joules ","value":7731,"fileboyId":"5b282582-3b28-4f69-be36-8ba1caa1521c"},{"label":"a unit of distance equal to 1,000 metres (approximately 0.62 miles)","value":7733,"fileboyId":"87ff051a-5305-4711-9b10-bfed32df7a52"},{"label":"relating to motion","value":7734,"fileboyId":"2e601ac7-9e57-4d8f-806b-443d40536339"},{"label":"to use or swap the place of something","value":7735,"fileboyId":"ab81a55f-a565-4904-8f60-d0536ab4e9c2"}],"question_data":{"body":"The mass is the kinetic energy divided by 0.5, multiplied by the speed squared. Putting these numbers into the equation gives us a mass of 0.06 kilograms for the tennis ball. What difference would it make if you were attempting to calculate the distance an object travelled in kilometres using this equation?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/accc8f7b-c041-4c6a-ae81-ce5d2a3eec36?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What does kinetic mean?
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{"type":"multi-choice","id":"7164","dataJson":{"type":"multi-choice","slide_id":42411,"key":7164,"prompt":"\u003cp\u003eWhat does kinetic mean?\u003c/p\u003e","validResponse":[7734],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a unit of distance equal to 1,000 metres (approximately 0.62 miles)","value":7733,"fileboyId":"87ff051a-5305-4711-9b10-bfed32df7a52"},{"label":"relating to motion","value":7734,"fileboyId":"2e601ac7-9e57-4d8f-806b-443d40536339"},{"label":"to use or swap the place of something","value":7735,"fileboyId":"ab81a55f-a565-4904-8f60-d0536ab4e9c2"},{"label":"the unit of energy. 1 kilojoule = 1000 joules ","value":7731,"fileboyId":"5b282582-3b28-4f69-be36-8ba1caa1521c"},{"label":"the unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre","value":7732,"fileboyId":"b55de4fa-7ccd-4453-84c4-305591ac6f7c"}],"question_data":{"body":"The kinetic energy of an object depends on two factors: 1) the object's mass, 2) The object's speed. It can be expressed in the equation below. Kinetic energy is measured in joules. Mass is measured in kilograms. Speed is measured in metres per second. ","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/581677b0-8026-4afe-997a-f04c85f89e28?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a joule?
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{"type":"multi-choice","id":"7162","dataJson":{"type":"multi-choice","slide_id":42415,"key":7162,"prompt":"\u003cp\u003eWhat is a joule?\u003c/p\u003e","validResponse":[7732],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"to use or swap the place of something","value":7735,"fileboyId":"ab81a55f-a565-4904-8f60-d0536ab4e9c2"},{"label":"relating to motion","value":7734,"fileboyId":"2e601ac7-9e57-4d8f-806b-443d40536339"},{"label":"a unit of distance equal to 1,000 metres (approximately 0.62 miles)","value":7733,"fileboyId":"87ff051a-5305-4711-9b10-bfed32df7a52"},{"label":"the unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre","value":7732,"fileboyId":"b55de4fa-7ccd-4453-84c4-305591ac6f7c"},{"label":"the unit of energy. 1 kilojoule = 1000 joules ","value":7731,"fileboyId":"5b282582-3b28-4f69-be36-8ba1caa1521c"}],"question_data":{"body":"The mass is 700 kilograms and the speed is 20 metres per second. Putting these numbers into the equation gives us a kinetic energy of 140,000 joules. Scientists often convert joules into kilojoules. To do this, we divide by 1000. In this case, the kinetic energy is 140 kilojoules. ","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/eb9c113b-c0dd-402b-bc01-0ce4b64e4034?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
Look at the slide below to work out the answer.