{"id":3919,"date":"2023-01-09T10:49:03","date_gmt":"2023-01-09T10:49:03","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3919"},"modified":"2025-12-19T05:44:04","modified_gmt":"2025-12-19T05:44:04","slug":"s-13-d-measuring-speed","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-13-d-measuring-speed\/","title":{"rendered":"S-13.d Measuring Speed"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Measurement of Speed<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAGAzmVXu1Q\/gNa7Sadk5ImCI1fa8tROcQ\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAGAzmVXu1Q&#x2F;gNa7Sadk5ImCI1fa8tROcQ&#x2F;watch?utm_content=DAGAzmVXu1Q&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">measuring speed<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-c45cb7eb1c7745769e291a7b5c62f6be\" style=\"color:#000060\"><strong>Definition of Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Speed is the distance traveled per unit of time.<\/li>\n\n\n\n<li>It is a <strong>scalar quantity<\/strong>, meaning it only has magnitude (no direction).<\/li>\n\n\n\n<li>The formula for speed is<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"231\" height=\"71\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-4.png\" alt=\"\" class=\"wp-image-15303\"\/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Where:\n<ul class=\"wp-block-list\">\n<li><strong>Distance<\/strong> is the total path length traveled by an object (measured in meters, kilometers, etc.).<\/li>\n\n\n\n<li><strong>Time<\/strong> is the duration taken to cover the distance (measured in seconds, minutes, hours, etc.).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-0f5d011ef66518749e395850ebe1a24c\" style=\"color:#000060\"><strong>Units of Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The SI (International System) unit for speed is <strong>meters per second (m\/s)<\/strong>.<\/li>\n\n\n\n<li>Other common units include <strong>kilometers per hour (km\/h)<\/strong>, <strong>miles per hour (mph)<\/strong>, etc.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-9af7a192965803909b110eb540613174\" style=\"color:#000060\"><strong>Calculating Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>To calculate speed, divide the total distance by the total time taken.\n<ul class=\"wp-block-list\">\n<li><strong>Example<\/strong>: If a car travels 100 kilometers in 2 hours, the speed is:<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"340\" height=\"74\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-5.png\" alt=\"\" class=\"wp-image-15304\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-5.png 340w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-5-300x65.png 300w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-409f395a46cdbad8228f0cc1a0b2ff77\" style=\"color:#000060\"><strong>Types of Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Uniform Speed<\/strong>: When an object covers equal distances in equal intervals of time.\n<ul class=\"wp-block-list\">\n<li><strong>Example<\/strong>: A train moving at a constant speed of 60 km\/h.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Non-uniform Speed<\/strong>: When an object covers unequal distances in equal intervals of time.\n<ul class=\"wp-block-list\">\n<li><strong>Example<\/strong>: A car moving at varying speeds.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-78062666b2b60d9004a58bfaf0c43331\" style=\"color:#000060\"><strong>Average Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Average speed is the total distance traveled divided by the total time taken.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"671\" height=\"127\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-6.png\" alt=\"\" class=\"wp-image-15305\" style=\"width:535px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-6.png 671w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/image-6-300x57.png 300w\" sizes=\"auto, (max-width: 671px) 100vw, 671px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">It is used when the speed is not constant over the entire journey.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-cb3866826bf70b257d66a2b65353d0c7\" style=\"color:#000060\"><strong>Instantaneous Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Instantaneous speed is the speed of an object at a particular moment in time.<\/li>\n\n\n\n<li>It can be measured using devices like a speedometer.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-81a3de8a68e6a4379152210e72e276a3\" style=\"color:#000060\"><strong>Speed-Time Graph<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A graph that shows how speed changes with respect to time.<\/li>\n\n\n\n<li>The slope of the graph represents <strong>acceleration<\/strong>.<\/li>\n\n\n\n<li>A flat line indicates uniform speed, while a sloping line indicates a change in speed (acceleration or deceleration).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-94a3345e603099aae4d4dd78a58c13de\" style=\"color:#000060\"><strong>Relationship Between Speed, Distance, and Time<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>You can rearrange the formula to calculate distance or time if speed is known:\n<ul class=\"wp-block-list\">\n<li><strong>Distance<\/strong> = Speed \u00d7 Time<\/li>\n\n\n\n<li><strong>Time<\/strong> = Distance \u00f7 Speed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-addedc1f4b54f7d3370af8c34be328cc\" style=\"color:#000060\"><strong>Factors Affecting Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Friction<\/strong>: Can slow down moving objects, decreasing their speed.<\/li>\n\n\n\n<li><strong>Air resistance<\/strong>: Can also reduce speed, especially for objects moving at high speeds, like cars or planes.<\/li>\n\n\n\n<li><strong>Terrain<\/strong>: Slopes and rough surfaces can decrease speed.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-066e3460307889ebf86e0ec45dc08331\" style=\"color:#000060\"><strong>Examples in Real Life<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A cyclist riding at a steady 10 km\/h.<\/li>\n\n\n\n<li>A plane traveling at 800 km\/h.<\/li>\n\n\n\n<li>A person running at 6 m\/s.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-8b88398e608ad98bdc7d8aa51c82a02a\" style=\"color:#000060\"><strong>Applications of Speed<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Understanding speed helps in various fields like sports, transportation, and vehicle safety.<\/li>\n\n\n\n<li>It&#8217;s important for calculating travel time, analyzing motion in physics, and managing traffic speeds.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/82405\/403\/471\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-60.png\" alt=\"\" class=\"wp-image-6025\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-60.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-60-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-60-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-60-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81672\/812\/909\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-55.png\" alt=\"\" class=\"wp-image-6026\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-55.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-55-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-55-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-55-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Measurement of Speed measuring speed by Delta publications Key Notes : Definition of Speed Units of Speed Calculating Speed Types of Speed Average Speed Instantaneous Speed Speed-Time Graph Relationship Between Speed, Distance, and Time Factors Affecting Speed Examples in Real Life Applications of Speed Let&#8217;s practice!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-3919","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3919"}],"version-history":[{"count":15,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3919\/revisions"}],"predecessor-version":[{"id":17679,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3919\/revisions\/17679"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}