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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» VELOCITY = 70 m/sfinal velocity = 0 m/stime = 7 sacceleration = (v-u)/tacceleration = (0-70)/7acceleration = -70/7acceleration = -10 m/s²therefore, the RETARDATION is 10 m/s² and the ACCELERATION is -10 m/s²


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