When Will the Thrown Mass Overtake the Dropped Shot Put in Freefall?

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SUMMARY

The discussion centers on a physics problem involving two objects: a 1.5 kg shot put dropped from 60 meters and a 100 g mass thrown downward at 10 m/s from 70 meters. The key equations used include kinematic equations for freefall, specifically x = (v + u/2) * t and v² = u² + 2ax, with gravitational acceleration set at 9.8 m/s². The objective is to determine the time at which the thrown mass overtakes the dropped shot put by equating their respective positions over time.

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yakiland
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Heres a question I am really stuck on...

Homework Statement


If Person A drops a shot put weighing 1.5 kg from a height of 60m, and at exactly the same time Person B throws down a 100g mass at a speed of 10 m/s from 70m up, at what time would the mass overtake the shot put?


Homework Equations


mass is irrelevant due to freefall.

to find the total time it takes for each item to reach the ground, i used
x=(v+u/2)*t
AND
v^2=u^2+2ax

acceleration due to gravity=9.8m/s^2

The Attempt at a Solution


I have no idea where to start...
 
Physics news on Phys.org
If you write out the x equations for both the A ball and B ball, then you can equate the two and find the time they occupy the same position.
 

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