- #36
ZenchiT
- 35
- 1
m/s^-1 as its terminal velocity?haruspex said:The problem is the lack of units for the 19.6. What units should that have? So what units will the 1/19.6 have?
Thank you for the amount of help you've given me!
m/s^-1 as its terminal velocity?haruspex said:The problem is the lack of units for the 19.6. What units should that have? So what units will the 1/19.6 have?
m/s, or ms-1 (but not m/s-1) is right for the 19.6. So what should it be for 1/19.6?ZenchiT said:m/s^-1 as its terminal velocity?
Thank you for the amount of help you've given me!
Well, surely that is incorrect! (sorry to rain on your parade). The initial velocity is given as +6 m/s and your formula says initial velocity = 0!ZenchiT said:Part a) F=mg and F=kv
Therefore mg=kv and v=19.6 (terminal velocity)
k = mg/v
k = mg/19.6
Part b)
Equation of motion -> -mg-kv = ma
(Sub in k =mg/v)
-2mg = ma
a = -2g
dv/dt = -2g
v = -2gt
Or maybe instead of subbing in k=mg/v It should have been mg/19.6?
Voila! Surely that's correct right?!