Right, okay. So, in the horizontal direction, the force of friction and the force of the push (150N) are both affecting the object. They are also in opposite directions. I drew a FBD for it (attached file), however I am still stuck on how you calculate the Force of Friction.
Homework Statement
A horizontal force of 150 N is used to push a 50.0 kg packing crate a distance of 5.00 m on a rough horizontal surface.
The acceleration of gravity is 9.81 m/s2 .
If the crate moves with constant velocity, calculate:
a) the work done by the force. Answer in units of J.
b)...
Okay, this makes more sense.
So...
Ff=mus*Fn
Ff=0.218*18620
Ff=4059.16
And then because sum of all forces is the force of friction,
4059.16=(1900)a
a=2.1364m/s^2
Homework Statement
A 1900 kg car moves along a horizontal road at speed v0 = 23.6 m/s. The road is wet, so the static friction coefficient between the tires and the road is only μs = 0.218 and the kinetic friction coefficient is even lower, μk = 0.1526.
The acceleration of gravity is 9.8 m/s2...
Homework Statement
Determine the time it takes for the ball tor each the plane of the fence. Answer in units of s.
(VIEW IMAGE ATTACHED)
Homework Equations
Vf+vi+at
d=vit+.5at^2
vf^2=vi^2+2ad
The Attempt at a Solution
[/B]
I found Vix to be 11.59 using trig. I then used the second equation...
Homework Statement
A particle travels between two parallel ver- tical walls separated by 25 m. It moves to- ward the opposing wall at a constant rate of 9.2 m/s. It hits the opposite wall at the same height.
The acceleration of gravity is 9.8 m/s2 .
(IMAGE FOR CLARIFICATION ATTACHED)
a)...
Yes, I used the y component of the vector as explained in my reply to "SteamKing" However, I still got the answer wrong.
Any ideas on where I went wrong?
Thank you! So I understand what the projectile looks like. I have drawn a picture and tried a different attempt to what I was doing before. I found the x and y components of the angle. I then used the y component of this answer as the initial vertical velocity, used 0 as the final vertical...
Homework Statement
An artillery shell is fired at an angle of 23.9◦ above the horizontal ground with an initial speed of 1530 m/s.
The acceleration of gravity is 9.8 m/s2 .
Find the total time of flight of the shell, neglecting air resistance.
Answer in units of min.
Homework Equations...