Physiological Effects of High Acceleration: Investigating with a Rocket Train

  • Thread starter Thread starter courtrigrad
  • Start date Start date
  • Tags Tags
    Rocket Train
AI Thread Summary
A rocket-driven sled is utilized to study the physiological effects of high acceleration on humans, achieving speeds of 1000 miles per hour in just 1.8 seconds. To analyze the acceleration, it is necessary to convert the speed to SI units and calculate the acceleration using the formula v = v0 + at. Comparing the sled's acceleration to gravitational acceleration (g) involves dividing the sled's acceleration by g to determine how many times greater it is. The distance traveled during this time can be calculated using the formula x = x0 + v0t + 0.5at². Accurate calculations and unit conversions are essential for the investigation.
courtrigrad
Messages
1,236
Reaction score
2
A rocket-driven sled running on a straight level track is used to investigate the physiological effects of large acceleration on humans. One such sled can attain a speed of 1000 miles/hr in 1.8 sec starting from rest. (a) Assume the acceleration is constant and compare it t o g . (b) What is the distance traveled in this time? For (a) would I use v_{x} = v_{x}_{0} + a_{x}t? THe time would be t = \frac{1.8}{3600} hours? Also what does it mean to compare it with g? For the second part I would just use x = x_{0} + v_{x}_{0}t + \frac{1}{2}a_{x}t^{2}


Any help is appreciated
 
Physics news on Phys.org
Don't forget to convert to SI units. The formulas you're suggesting are correct. To compare the acceleration to g is simple; divide the acceleration by g to get how many times it's greater than g.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top