Three identical rocks are launched with identical speeds from the top of a platform of height $ h_0 $.

Rock 1 is launched at a $ 45^\circ $ angle above the horizontal
Rock 2 is launched at a $ 45^\circ $ angle below the horizontal
Rock 3 is launched horizontally

Which of the following correctly relates the magnitude $ v_y $ of the vertical component of the velocity of each rock immediately before it hits the ground?

Question

Three identical rocks are launched with identical speeds from the top of a platform of height $ h_0 $.

Rock 1 is launched at a $ 45^\circ $ angle above the horizontal
Rock 2 is launched at a $ 45^\circ $ angle below the horizontal
Rock 3 is launched horizontally

Which of the following correctly relates the magnitude $ v_y $ of the vertical component of the velocity of each rock immediately before it hits the ground?(a) $$v_{y1} = v_{y2} = v_{y3}$$
, (b) $$v_{y1} = v_{y2} > v_{y3}$$
, (c) $$v_{y1} > v_{y3} > v_{y2}$$
, (d) $$v_{y2} > v_{y3} > v_{y1}$$
:

Jason · Accepted Answer

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