Solving for Height and Distance: Janet's Displacement Speed Calculation

AI Thread Summary
Janet jumps off a diving platform with a horizontal velocity of 3.1 m/s and lands in the water after 3.0 seconds. The horizontal distance from the platform is calculated to be 9.3 meters using the formula distance = horizontal velocity × time. To determine the height of the platform, kinematic equations related to vertical motion need to be applied, considering the time of fall and gravitational acceleration. The discussion emphasizes the need for clarity on which formulas to use for vertical displacement. Understanding both horizontal and vertical components is crucial for solving the problem accurately.
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Homework Statement


Janet jumps off a high-diving platform with a horizontal velocity of 3.1 m/s and lands in the water 3.0 s later. How high is the platform, and how far from the base of the platform does she land?
m (height)
m (distance from platform)


Homework Equations



horizontalV*t=D

The Attempt at a Solution


I have got the distance from platform to be 9.3m using the forunla, but am unsure of the height like what forumla to use
 
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