9. Work & Energy
Net Work & Work-Energy Theorem
6:07 minutes
Problem 7.64
Textbook Question
Textbook Question(II) A 3.5-kg object moving in two dimensions initially has a velocity v₁→ (10.0 î + 20.0 ĵ) m/s. A net force F→ then acts on the object for 2.0 s, after which the object’s velocity is v₂→ (15.0 î + 30.0 ĵ) m/s . Determine the work done by F→ on the object.
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