The problem involves a balloon ascending at a speed of 13 m/s from a height of 300 m, from which a ballast is dropped. The original poster questions whether the ballast begins to fall immediately upon release or continues to ascend for a short distance before descending, as suggested by the problem's solution indicating an ascent of 8.6 m.
The discussion is ongoing, with participants providing insights and raising questions about the observer's perspective and the physics of motion. Some participants suggest that the ballast does not immediately fall, while others emphasize the importance of understanding the initial conditions of motion.
There are differing interpretations of the scenario based on the perspective of observers at different heights. The discussion highlights the complexity of visual perception in relation to motion and the effects of gravity.
While the balloon is ascending, everything in the balloon is ascending at the same velocity. It's no different if you pick up a rock and throw it straight up at 13 m/s.carlitos_30 said:Homework Statement
A balloon is ascending at an speed of 13 m/s. At 300 m from the ground a ballast is drop from the balloon. Find the maximum height the ballast reach.
My doubt is: When the ballast is drop ¿it starts falling inmediately?. The solution of the problem implies that the ballast keep ascending for 8,6 m.
Thanks.
SteamKing said:While the balloon is ascending, everything in the balloon is ascending at the same velocity. It's no different if you pick up a rock and throw it straight up at 13 m/s.
It takes gravity a finite duration to arrest the upward motion and bring the velocity to zero, before things begin to fall back to the ground.
How do you know what someone else sees?carlitos_30 said:An observer in the ground would see the ballast fall inmediately, I mean he wouldn't see the ballast ascending for 8,6 meters. That's what I imagine. What's wrong with my imagination?
This is a great example. Thanks.billy_joule said:What about a ball dropped from a car moving at 13 m/s?
If you're watching from the side of the road what speed will the ball be traveling as soon as it's dropped? Will it s stop where it lands? Or continue bouncing down the road?
SteamKing said:How do you know what someone else sees?
If you throw a rock straight up at 13 m/s, does the rock stop immediately once it leaves your hand and drop to the ground?
You can imagine many different things, some real, some impossible. We deal with science at PF, not your imagination.