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quickclick330
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Homework Statement
4. A box of mass M=10 kg is at rest on a frictionless level surface (like an ideally smooth
ice rink). A rope tied to the box is pulled horizontally, such that the tension in the rope is
(vector-->)T = 75 ˆx + 25 ˆz N, where both the x-axis and the z-axis are parallel to the floor. What is
the speed of the box after 0.05 seconds?
1. 0.395 m/s
2. 0.264 m/s
3. 0.198 m/s
4. 0.158 m/s
5. 0.132 m/s
6. 0.000 m/s
Homework Equations
pf = pi +Fnet*dt
The Attempt at a Solution
I know how to solve this problem, I'm just having trouble when it comes to the vectors in this case.
Pf = pi + Fnet*dt
{pi = 0) so..
Pf = Fnet*dt
p = mv
mvf = Fnet* dt
vf = (Fnet *dt)/m
But I'm stuck on the vectors...please help!