A stone is dropped from the top of the tower 45m height. what is its velocity when it hits the ground?
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the velocity would be 30 m/sec.
v square =u square +2aS
v square =0+2×-10×45
v square =-900
v=-30m /sec
v square =u square +2aS
v square =0+2×-10×45
v square =-900
v=-30m /sec
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