I'm an idiot. Never mind. I misread to work done by the stopping force. 180 is the right answer for those that care. There is no need for work at all, just a simple F = ma problem.
An arrow of mass 20 grams is shot horizontally into a bale of hay with a velocity of 60 m/s. It penetrates a debpt of 20 CM before stopping.
What is the average stopping force acting on the arrow?
I've been doing
W = -F*D
W = -(ma)*d
I'm finding a by using a kinematic equation, v...
I think I get it actaully. It's werid. I post a question here and even before I get a response things start making sense.
I did, F - frictionForce = ma. Since a = 0, the F = frictionForce.
So, W = coeff of friction * mass * gravity * distance. Would that be correct?
A 20.0kg suitcase is dragged horizontally on a flat floor by a passenger at a constant velocity for 15m. The coefficent of kinetic friction is .340.
What is the work done by the passenger?
I've been trying to do W = FD
F = ma
But it says constant veloctiy, which throws me off. Constant...
I take that back. You/me are both right. The teacher emailed us saying that that problem was broken and that everyone got credit for it. Thanks for you're help.
This is homework that's submitted online. The due date is already passed, and I missed the problem but that dosen't matter. It's only one point.
Howerver, we are still allowed to submit answer to check our work after the due date not for points, and i just tried the answers you provided and...
I've been doing this problem for the last 170 minutes. Literally, and I'm pissed.
A 43-kg seal at an amusement park slides from rest down a ramp into the pool below. The top of the ramp is 1.75 m higher than the surface of the water and the ramp is inclined at an angle of θ = 35.0° above the...