Asked by Anonymous
Superman must stop a 110-km/h train in 100m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg.
Answers
Answered by
Henry
Vo = 110km/h = 110000m/3600s = 30.56 m/s
V^2 = Vo^2 + 2a*d = 0
a = -(Vo^2)/2d = -(30.56^2)/200 = -4.67
m/s^2.
F = m*a = 3.6*10^5 * (-4.67) = -1.68*10^6 N.
Note: The negative sign means that the force opposes the motion.
V^2 = Vo^2 + 2a*d = 0
a = -(Vo^2)/2d = -(30.56^2)/200 = -4.67
m/s^2.
F = m*a = 3.6*10^5 * (-4.67) = -1.68*10^6 N.
Note: The negative sign means that the force opposes the motion.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.