Problem solved; Sweet! What an awesome forums. I just started in the science field so I'll be probably be around for the next few years.
Thanks a lot for all your help!
I realized I had V2 and V1 mixed around, it should have been:
V22 = V12 + 2(a)(d)
102 = 502 + 2(a)(40)
a = -30m/s/s
Which makes sense now because he is accelerating downwards (negative).
F = ma
F = (100)(-30)
F = -3000N upwards
Hmm, so the net force is -3000N. So,
Fnet = F1 + F2...
Ohhhh yeaah:
V2 = V1 + (a)(t)
10 = 50 + (a)(t)
Correct?
But why isn't the time 4 seconds? I thought that the velocity was the distance divided by time; so:
10m/sec = 40m / seconds
seconds = 4
Nevertheless, there's this kinematic equation as well:
V22 = V12 + 2(a)(d)
502 =...
Alright. Forces on parachutist, that would be 100kg times the force of gravity, so 980N down? But I think that's his wieght, not his force...
His acceleration is his force divided by his mass, but I am only given the velocity. But I could find the acceleration by finding the slope of the...
I have problem and can not solve it:
A piece of metallic aluminum weighing 2.50 grams is treated with 75.0 mL of sulphuric acid ( d = 1.18 g/cm3 , 24.7% H2SO4 ). After the metal is dissolved, the solution is diluted to 400mL.
a) Calculate the morality of the solution with respect to the...
1. Homework Statement :
A parachutist whose total mass is 100kg is falling at 50m/sec when his parachute opens.
His velocity drops to 10 m/sec in a vertical displacement of 40m. What force was exerted by his parachute?
2. Homework Equations :
F = ma
Fg = m(9.8)
This is my first...