- #1
rasen58
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Homework Statement
The speed of a 2 kg object changes from 30 m/s to 40 m/s during a 5 s time interval. During this same time interval, the velocity of the object changes in direction by 90 degrees. What average force was applied during the time interval?
Homework Equations
impulse = F.t
The Attempt at a Solution
I know how to find the force if the object hadn't turned.
2 kg (40 - 30) = 20 = F . t
F = 4 N
But I don't know how to find the force required to move it.
The answer is apparently 50N.