A rocket is moving vertically upwards relative to the surface of ewrth. The motion takes place close to the surface of the earth and it's assumed that g is the constant gravitational acceleration. At time, t the mass of the rocket is M(1-kt) where M and k are position constsnts and the rocket is moving upwards with speed,v. The rocket expells fuel vertically downwards with speed,u. relative to the rocket. Given further that t=0, v=0. Determine an expression for v in time, t in terms of u, g and k.
2:45 why was the pi is missing? The numerator pi could cancel the denominator pi. So the result must be 3/4 h
If you watch the end, I correct the mistake of leaving off the pi and it does, in fact, cancel. I hope that helps.
@@DrGonzalinajec ow, sorry. I'm to rush
Thank you!!
bless your mortal soul
A rocket is moving vertically upwards relative to the surface of ewrth. The motion takes place close to the surface of the earth and it's assumed that g is the constant gravitational acceleration. At time, t the mass of the rocket is M(1-kt) where M and k are position constsnts and the rocket is moving upwards with speed,v. The rocket expells fuel vertically downwards with speed,u. relative to the rocket. Given further that t=0, v=0. Determine an expression for v in time, t in terms of u, g and k.