{"id":234024,"date":"2025-06-13T16:58:13","date_gmt":"2025-06-13T16:58:13","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=234024"},"modified":"2025-06-13T16:58:15","modified_gmt":"2025-06-13T16:58:15","slug":"a-car-travels-a-distance-of-75-km-in-1-5-hours","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/13\/a-car-travels-a-distance-of-75-km-in-1-5-hours\/","title":{"rendered":"A car travels a distance of 75 km in 1.5 hours."},"content":{"rendered":"\n

A car travels a distance of 75 km in 1.5 hours. (i) What is its speed? (ii) Express its speed in m\/s. *give answer fast and get branlist<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

(i) What is its speed in km\/h?<\/strong><\/p>\n\n\n\n

To calculate speed:Speed=DistanceTime=75\u2009km1.5\u2009hours=50\u2009km\/h\\text{Speed} = \\frac{\\text{Distance}}{\\text{Time}} = \\frac{75 \\, \\text{km}}{1.5 \\, \\text{hours}} = 50 \\, \\text{km\/h}Speed=TimeDistance\u200b=1.5hours75km\u200b=50km\/h<\/p>\n\n\n\n

Answer:<\/strong> 50 km\/h<\/p>\n\n\n\n

\n\n\n\n

(ii) Express its speed in m\/s:<\/strong><\/p>\n\n\n\n

To convert from km\/h to m\/s:1\u2009km\/h=10003600=518\u2009m\/s1 \\, \\text{km\/h} = \\frac{1000}{3600} = \\frac{5}{18} \\, \\text{m\/s}1km\/h=36001000\u200b=185\u200bm\/s<\/p>\n\n\n\n

So,50\u2009km\/h\u00d7518=25018\u224813.89\u2009m\/s50 \\, \\text{km\/h} \\times \\frac{5}{18} = \\frac{250}{18} \\approx 13.89 \\, \\text{m\/s}50km\/h\u00d7185\u200b=18250\u200b\u224813.89m\/s<\/p>\n\n\n\n

Answer:<\/strong> \u2248 13.89 m\/s<\/p>\n\n\n\n

\n\n\n\n

\ud83d\udcd8 Textbook-Style Explanation (300 words)<\/h3>\n\n\n\n

To find how fast an object is moving, the concept of speed<\/strong> is used. Speed tells how much distance is covered in a given time and is mathematically expressed as:Speed=DistanceTime\\text{Speed} = \\frac{\\text{Distance}}{\\text{Time}}Speed=TimeDistance\u200b<\/p>\n\n\n\n

In this problem, a car travels a total distance of 75 kilometers in 1.5 hours. Applying the formula:Speed=75\u2009km1.5\u2009h=50\u2009km\/h\\text{Speed} = \\frac{75 \\, \\text{km}}{1.5 \\, \\text{h}} = 50 \\, \\text{km\/h}Speed=1.5h75km\u200b=50km\/h<\/p>\n\n\n\n

This means the car covers 50 kilometers every hour.<\/p>\n\n\n\n

To express speed in meters per second (m\/s)<\/strong>, a unit commonly used in scientific contexts, a conversion is required. There are 1000 meters in one kilometer and 3600 seconds in one hour. So:1\u2009km\/h=1000\u2009m3600\u2009s=518\u2009m\/s1 \\, \\text{km\/h} = \\frac{1000 \\, \\text{m}}{3600 \\, \\text{s}} = \\frac{5}{18} \\, \\text{m\/s}1km\/h=3600s1000m\u200b=185\u200bm\/s<\/p>\n\n\n\n

Multiplying the speed in km\/h by this factor gives:50\u2009km\/h\u00d7518=25018\u224813.89\u2009m\/s50 \\, \\text{km\/h} \\times \\frac{5}{18} = \\frac{250}{18} \\approx 13.89 \\, \\text{m\/s}50km\/h\u00d7185\u200b=18250\u200b\u224813.89m\/s<\/p>\n\n\n\n

Therefore, the car\u2019s speed is 50 kilometers per hour or approximately 13.89 meters per second<\/strong>. Expressing speed in m\/s is useful when analyzing motion in physics, especially when dealing with acceleration, force, or kinetic energy, because these calculations use SI units.<\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

A car travels a distance of 75 km in 1.5 hours. (i) What is its speed? (ii) Express its speed in m\/s. *give answer fast and get branlist The Correct Answer and Explanation is: (i) What is its speed in km\/h? To calculate speed:Speed=DistanceTime=75\u2009km1.5\u2009hours=50\u2009km\/h\\text{Speed} = \\frac{\\text{Distance}}{\\text{Time}} = \\frac{75 \\, \\text{km}}{1.5 \\, \\text{hours}} = 50 \\, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-234024","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/234024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=234024"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/234024\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=234024"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=234024"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=234024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}