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A pebble thrown vertically upwards with an initial velocity 70m/s comes to stop in 7s find the retardation. pls explain step by step.​

Answer» <html><body><a href="https://interviewquestions.tuteehub.com/tag/velocity-1444512" style="font-weight:bold;" target="_blank" title="Click to know more about VELOCITY">VELOCITY</a> = 70 m/sfinal velocity = 0 m/stime = <a href="https://interviewquestions.tuteehub.com/tag/7-332378" style="font-weight:bold;" target="_blank" title="Click to know more about 7">7</a> sacceleration = (v-u)/tacceleration = (0-70)/7acceleration = -70/7acceleration = -10 m/s²therefore, the <a href="https://interviewquestions.tuteehub.com/tag/retardation-1187717" style="font-weight:bold;" target="_blank" title="Click to know more about RETARDATION">RETARDATION</a> is 10 m/s² and the <a href="https://interviewquestions.tuteehub.com/tag/acceleration-13745" style="font-weight:bold;" target="_blank" title="Click to know more about ACCELERATION">ACCELERATION</a> is -10 m/s²</body></html>


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