THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Dot product
A force acts obliquely to displacement
A constant force is (4i + 3j) N and the displacement is (2i − j) m.
How much work does this force do?
Organize the givens & assumptions
- F = (4, 3) N
- Δr = (2, −1) m
Constant force during the given displacement; both vectors use the same orthonormal axes.
- A
- B
- C
- D
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