Question #49a06

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Answer 1 · 2017-05-14T09:05:37

Here's my explanation

#"displacement" = 1/2gt^2 = "5m"#

#Vavg = "5m/s"#

#Vavg = (V_o + V_f)/2#

#V_o + V_f = 10#

#V_o = "gt "(where t is free fall time -1)#

#Vf = 10 - 10t#

#Vf = g(t+1) = 10t + 10#

#Vf = 10-10t = 10t + 10#

#t = 0+1#

#t = 1s#

If the height of the tower is h

#"Average speed" = h/s#