Posted by Leo on .
Hello everyone, I need help with this question:
A dart gun is fired while being held horizontally at a height of 1.00m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 5.00m. A college student holds the same gun in a horizontal position while sliding down a 45.0 degree incline at a constant speed of 2.00m/s. How far will the dart travel if the student fires the gun while it is 1.00m above the ground?
Thanks very much!

physics 
Albert einstein,
As far as it wants! Your most welcome! :)

physics 
Elena,
(a)
h=gt²/2 =>
t =sqrt(2h/g)=
=sqrt(2•1/9.8) =0.45 s
s=v(x) •t =>
The dart initial speed is
v(x) = s/t =5/0.45=11.07 m/s.
(b) v(y) =v•sin45º=2•0.707 =1.41m/s
h=v(y) •t +gt²/2
gt²/2 + v(y) •t –h =0,
4.9 t² +1.41•t 1 =0
t1=0.33 s. t2  negative root
s1=v(x) •t1= 11.07•0.33=3.66 m. 
physics 
Master Bater,
Elena's answer is wrong
last step should be 12.48(0.33)
answer is 4.12m 
physics 
Anonymous,
the time is supposed to be given , it was 0.329