19:23 69% D ..ooo AT&T; quest.cns.utexas.edu Answer in units of m 019 (part 1 of

Question

19:23 69% D ..ooo AT&T; quest.cns.utexas.edu Answer in units of m 019 (part 1 of 2) 10.0 points A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 26 m/s. The cliff is 50 m above the water's surface, as shown. 26 m/s How long does it take for the stone to fall to the water? The acceleration of gravity is 9.81 m/s Answer in units of s 020 (part 2 of 2) 10.0 points With what speed does the stone strike the water? Answer in units of m/s 021 (part 1 of 2) 10.0 points

Explanation / Answer

a) t = sqrt(2*H/g)

= sqrt(2*50/9.8)

= 3.19 s

b) vy = sqrt(2*9.8*50)

= 31.3 m/s

vx = 26 m/s

v = sqrt(vx^2+vy^2)

= 40.7 m/s

c)

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