a particle is projected downward with velocity 5m/s from a height of 80 m find time when it will cross 20m 40m 60m mark
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Hence the time is 4,8 and 12 seconds respectively.
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Answer:for 20m it is 4 seconds, 40m 8 seconds and for 60 m it is 12 seconds
Explanation:because distance divided by speed equals to time
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