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Given: u = 0m/s, a = 10m/s2, t = 0.5s
1) v = u+at
=> 0+ (10)(0.5)
=> 5m/s
Therefore, final velocity = 5m/s
2) vavg = (u+v)/ 2
=> (0+ 5)/2
=> 5/2
=> Average velocity is 2.5m/s
3) v2 - u2 = 2as
=> s = (v2 - u2)/2a
=>52 - 02/ 2(10)
=> (25 - 0)/20
=>25/20
=> height of ledge is 1.25m
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