The problem involves a spaceship that accelerates vertically to a speed of 340 km/h in 1.1 minutes. Participants are tasked with determining the altitude of the spaceship at 66 seconds, using appropriate equations of motion.
Several participants have provided calculations and insights, with some suggesting the need to reconsider the initial conditions and the average velocity. There is an ongoing exploration of different interpretations of the problem setup, particularly regarding the initial velocity and the correct application of kinematic equations.
Participants note that the spaceship starts from rest, which is a critical assumption in the calculations. There is also mention of discrepancies in answers submitted to Mastering Physics, indicating potential misunderstandings in the application of the equations.
You plugged in the final velocity, but was it traveling with that velocity the whole time? What was the average velocity, given the acceleration was constant?Manh said:
Manh said:
This equation doesn't describe the body in acceleration...Manh said:
a = 94.44/66 = 1.43 m/s^2DaniV said:
Thats right!Manh said:
I submit the answer but it is still incorrect according to Mastering PhysicsDaniV said:Thats right!
This is incorrect. The initial velocity is zero. Only the 3rd term should be in there. Alternately, the average speed is (94.44)/2 = 47.22 m/sec, so the distance should be half your original answer 6233/2 = 3117 m. Either way, you will get the same answer.Manh said: