- #1
nareeman
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Homework Statement
Dennis and Carmen are standing on the edge of a cliff. Dennis throws a basketball vertically upward, and at the same time Carmen throws a basketball vertically downward with the same initial speed. You are standing below the cliff observing this strange behavior. Whose ball is moving fastest when it hits the ground?
Homework Equations
v^2 = v0^2 -2gΔy
The Attempt at a Solution
in the same speed cause when Dennis basketball back to the initial position "`the throwing position" it will back with the same initial speed with different direction "the same direction as Carmen" so it's the same but it'll take Dennis basketball more time
Dennis
v0 is +
v^2 =+v0^2 -2gΔy
Carmen
v0 is -
v^2 =-v0^2 -2gΔy
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g =-9.8 for both
Δy is the same for both
so
Dennis v^2 =+v0^2
Carmen v^2 =-v0^2
add them
v^2+v^2 =0
v^2 =-v^2
please tell me if that's right if not how it can be solve
thank you