How High Can Basketball Players Jump?

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The discussion focuses on calculating the initial launch speed and air time of basketball players with a vertical leap of 120cm. Key variables include displacement (x = 1.2m), acceleration due to gravity (a = -9.8m/s²), and final velocity (v = 0). Participants emphasize using equations of motion to derive the initial velocity (u) and time in the air. The approach involves identifying known variables and applying the appropriate kinematic equations.

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the best rebounders in basketball have a vertical leap (that is, the vertical movement of a fixed point on their body) of 120cm.

a) what is their initial "launch" speed off the ground?

b) how long are they in the air?

i don't want you guys to give me an answer. Can you guys point me in the right direction on how to solve these questions?
 
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Think about your equations of motion. What I do is write down the variables that I know, and the variable that I want to know, then find the equation that has all of those in it.
So for this case you know that.
x = 1.2m (displacement)
a = -9.8m/s^2 (accelleration due to gravity)
v = 0 (final velocity, this occurs when they are at maximum height)
u = ? (initial velocity, what you need to find)
So you need to find the equation that uses x, a, v, and u and solve it.
 

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