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November 01, 2025, 03:17:42 pm
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Author Topic: Help with kinematics!  (Read 607 times)  Share 

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sajib_mostofa

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Help with kinematics!
« on: June 30, 2010, 03:36:59 pm »
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A balloon ascends, from rest on the ground, with an acceleration of 8m/s^2. At the end of 40 seconds, a stone is dropped from the balloon. Find the velocity of the balloon when the stone is dropped
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Chavi

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Re: Help with kinematics!
« Reply #1 on: June 30, 2010, 03:41:42 pm »
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Is there a weight involved with the stone?
If not, this is simply rectilinear motion, and the stone can be disregarded.

v=u + at
v= 8x40
320m/s
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sajib_mostofa

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Re: Help with kinematics!
« Reply #2 on: June 30, 2010, 03:43:48 pm »
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I got the same answer as you but the actual answer says its 50m/s
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