{"id":6814,"date":"2024-04-15T02:34:33","date_gmt":"2024-04-15T02:34:33","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=6814"},"modified":"2024-04-15T02:34:33","modified_gmt":"2024-04-15T02:34:33","slug":"a-stone-was-thrown-vertically-upwards-from-the-ground-with-a-velocity-of-50-m-sec-after-5-seconds-another-stone-was-thrown-vertically-upwards-from-the-same-place-if-both-the-stones-strike-the-ground","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-stone-was-thrown-vertically-upwards-from-the-ground-with-a-velocity-of-50-m-sec-after-5-seconds-another-stone-was-thrown-vertically-upwards-from-the-same-place-if-both-the-stones-strike-the-ground\/","title":{"rendered":"A stone was thrown vertically upwards from the ground with a velocity of 50 m\/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m\/sec2) A. 15 m\/sec B. 25 m\/sec C. 40 m\/sec D. 50 m\/sec"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6ab271604f632\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    15 m\/sec                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    25 m\/sec                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    40 m\/sec                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    50 m\/sec                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is $\\boxed{\\text{B}}$.<\/p>\n<p>The first stone was thrown upwards with a velocity of $50$ m\/s. After $5$ seconds, it will have a velocity of $50 &#8211; 5 \\times 10 = -25$ m\/s, since the acceleration due to gravity is $-10$ m\/s$^2$.<\/p>\n<p>The second stone was thrown upwards from the same place, so it will also have a velocity of $-25$ m\/s when it reaches the top of its trajectory. In order for <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> both stones to strike the ground at the same time, the second stone must have been thrown upwards with a velocity of $50 &#8211; 25 = 25$ m\/s.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li>Option A: $15$ m\/s. This is the velocity with which the second stone would have to be thrown upwards in order to reach a height of $50$ m. However, the question states that both stones strike the ground at the same time, so this option is incorrect.<\/li>\n<li>Option B: $25$ m\/s. This is the velocity with which the second stone would have to be thrown upwards in order to reach a height of $25$ m. Since the question states that both stones strike the ground at the same time, this option is correct.<\/li>\n<li>Option C: $40$ m\/s. <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> This is the velocity with which the second stone would have to be thrown upwards in order to reach a height of $40$ m. However, the question states that both stones strike the ground at the same time, so this option is incorrect.<\/li>\n<li>Option D: $50$ m\/s. This is the velocity with which the first stone was thrown upwards. However, the question states that both stones strike the ground at the same time, so this option is incorrect.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[645],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A stone was thrown vertically upwards from the ground with a velocity of 50 m\/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m\/sec2) A. 15 m\/sec B. 25 m\/sec C. 40 m\/sec D. 50 m\/sec<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/a-stone-was-thrown-vertically-upwards-from-the-ground-with-a-velocity-of-50-m-sec-after-5-seconds-another-stone-was-thrown-vertically-upwards-from-the-same-place-if-both-the-stones-strike-the-ground\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A stone was thrown vertically upwards from the ground with a velocity of 50 m\/sec. After 5 seconds another stone was thrown vertically upwards from the same place. 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