A object is launched up into air like a roller coaster which goes up an comes back down and goes back up again for unknown times. I have to find the v max then find the acceleration of the roller coaster.
Using the elastic potential energy i found the PE to be 37500 , where k = 750 x = 10m. then used the conservation of energy to find the v max = 12.25. mass = 100 kg
now i need to find the acceleration. HOW DO i DO THAT? please help ASAP!!!
2007-01-30 10:48:06 · 4 answers · asked by aero 1 in Science & Mathematics ➔ Physics
After the launching force is completed (usually neglected in these situations). The acceleration is a constant 9.8 m/s^2 in the negative y-direction. That is the only acceleration unless there is an outside force involved.
Since you are talking about EPE, there appears to be a spring involved, which would constitute an outside force. The acceleration due to the spring can be found by F=MA, where you know the mass, and the F = -kx, where x is the maximum displacement of the spring.
2007-01-30 10:59:39 · answer #1 · answered by Bigfoot 7 · 0⤊ 0⤋
The missing ingredient is time. how long does it take to reach max velocity? If the object is "launched" there is an outside force involved.
2007-01-30 10:53:24 · answer #2 · answered by yeraluzer 4 · 0⤊ 0⤋
well...the formula for acceleration is final velocity minus starting velocity divided by the time taken to change the velocity.
2007-01-30 10:56:28 · answer #3 · answered by mamaB 5 · 0⤊ 0⤋
acceleration is gravity
going up: -9.81 m/s
going down: 9.81 m/s
2007-01-30 10:52:20 · answer #4 · answered by zspace101 5 · 0⤊ 0⤋