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Homework Statement
A force varies with time according to the expression F=aΔt, where a = 2.0 N/s.
From this information, can you determine the work done on a particle that experienced this force over a displacement of 0.50 m?
Homework Equations
W = F*d
V_{f} = V_{o} + aΔt
F = ma
The Attempt at a Solution
First I looked for Work.
W = F*d
F = 2Δt
d = .5
W = Δt
Then I asked, can we find Δt?
This was my first try:
V_{f} = V_{o} + aΔt
V_{f}/a = Δt
a = F/m
We don't know m (inertia), so that should be one answer.
Second try:
initial force must equal zero at t = 0
F_{i} = 0
if we had F_{f}, we could divide it by 2 and get Δt.
So I thought that would be a second answer.
These two together were incorrect. I would assume I made a mistake on one of these methods or there is something else I am missing.
Thanks for any assistance,
arturo
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