An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talo

Question

An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talons wiggles loose and falls into the lake 5.00 m below. Calculate the speed of the fish relative to the water when it hits the water. 9.73 m/s 9.90 m/s 10.1 m/s 10.3 m/s Bryan Allen pedaled a human-powered aircraft across the English channel from the cliffs of Dover to Cap Gris-Nez on June 12, 1979. He flew for 169 minutes at an average velocity of 3.53 m/s in a direction 45.0 degree degrees south of east. Allen encountered a headwind averaging 2.00 m/s almost precisely in the opposite direction of his motion relative to the earth. What was his average velocity relative to the air? 5.53 m/s 1.53 m/s 4.53 m/s The speed of light

Explanation / Answer

9) from kinematic equation

v^2 = u^2+2as

v = sqrt(u^2+2gh)

v0x = 3 m/s

voy = sqrt(2gh) = sqrt(2*9.8*5) = 9.89 m/s

v = sqrt(vox^2+voy^2) = sqrt(3^2+9.89^2) = 10.34 m/s

option 4

10) vpg = vpa+vag

vpa = vpg-vag

vpa = 3.53-(-2) = 5.53 m/s 45 degrees south of east

option a

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