- #1
jehan4141
- 91
- 0
car stuntman problem please help :)
I have a physics problem with the solution provided, but the solution simply answers "No" with no numbers to back-up and explain why the answer is "No".
I have attempted the problem myself, but would like to see if my numbers are correct. Could you please tell me if my numbers are correct or incorrect?
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You can find the problem here on page 14 problem VII:
http://www.physics.princeton.edu/~mcdonald/examples/ph101_2006/learning_guide_ph101_2006.pdf
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**It is pretty important to look at the figure on this problem** :)
A stunt driver wishes to determine if he can drive off the incline and land on a platform (See the figure).
1. On the incline, the stunt driver can go from 0.0 m/s to 10.0 m/s in 2.0 seconds. Assuming constant acceleration, what speed can he achieve by the end of the incline if he starts at the bottom with speed v = 0.0 m/s?
Answer: 13.2 m/s ---> I understand this problem entirely. The next one was more difficult for me.
2. Show whether this speed is sufficient for him to make it.
Answer: No it isn't.
I came to this conclusion by finding that it takes 1.312 seconds to cross the 15 m in the x-direction, when the car is in the air. Using t = 1.312 seconds, I found the height of the car (the height above the point of take-off) at that moment to be 0.224 m. Thus, 0.224 m < 2m.
Thus the car will not make it. My ultimate question: are these figures correct to explain why the speed is insufficient to make the jump safely?
Sorry this is so incredibly long :/ but I would truly appreciate any help you guys can send my way!
I have a physics problem with the solution provided, but the solution simply answers "No" with no numbers to back-up and explain why the answer is "No".
I have attempted the problem myself, but would like to see if my numbers are correct. Could you please tell me if my numbers are correct or incorrect?
----------------------------------------------------------------------------------------
You can find the problem here on page 14 problem VII:
http://www.physics.princeton.edu/~mcdonald/examples/ph101_2006/learning_guide_ph101_2006.pdf
----------------------------------------------------------------------------------------
**It is pretty important to look at the figure on this problem** :)
A stunt driver wishes to determine if he can drive off the incline and land on a platform (See the figure).
1. On the incline, the stunt driver can go from 0.0 m/s to 10.0 m/s in 2.0 seconds. Assuming constant acceleration, what speed can he achieve by the end of the incline if he starts at the bottom with speed v = 0.0 m/s?
Answer: 13.2 m/s ---> I understand this problem entirely. The next one was more difficult for me.
2. Show whether this speed is sufficient for him to make it.
Answer: No it isn't.
I came to this conclusion by finding that it takes 1.312 seconds to cross the 15 m in the x-direction, when the car is in the air. Using t = 1.312 seconds, I found the height of the car (the height above the point of take-off) at that moment to be 0.224 m. Thus, 0.224 m < 2m.
Thus the car will not make it. My ultimate question: are these figures correct to explain why the speed is insufficient to make the jump safely?
Sorry this is so incredibly long :/ but I would truly appreciate any help you guys can send my way!