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# Acceleration Time graph of a parachutist who pulls his chute after jumping

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1. The image inserted is basically the question. Im thinking its C due to the motion i picture in my head (as seen in movies when a guy pulls a chute etc) However, im not 100% sure. Can someone confirm/ or let me know if im wrong. Thanks
2. It's wrong. C shows that there is constant acceleration then when the chute is pulled there is a large drop in acceleration but then rapidly rises.
3. (Original post by Vikingninja)
It's wrong. C shows that there is constant acceleration then when the chute is pulled there is a large drop in acceleration but then rapidly rises.
So the answer should be D, since the acceleration increases then becomes constant ?
4. (Original post by ksrw395)
So the answer should be D, since the acceleration increases then becomes constant ?
Actually no sorry I'm an idiot it is C sorry. Thought that on C it went back up to its original but looked second time and it rose up and stopped at 0. Others are incorrect since they show an increase in acceleration when its in the positive.
5. (Original post by Vikingninja)
Actually no sorry I'm an idiot it is C sorry. Thought that on C it went back up to its original but looked second time and it rose up and stopped at 0. Others are incorrect since they show an increase in acceleration when its in the positive.
Haha no problem
Thanks!
6. C is correct.

The jumper accelerates under constant gravitational acceleration (velocity increases) until his chute opens.

As the chute opens, he decelerates (curve goes negative) rapidly and attains a constant velocity at which time the acceleration is zero.

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