Answer: F x t.
- A F/t
- B F x t
- C m x t
- D F/m
Correct answer: B. F x t
Explanation: Impulse = Force x time = F x delta t. It equals the change in momentum.
Free-body diagram of a block on an incline: weight (mg) resolves into mg sinθ along the slope and mg cosθ into the slope, balanced by the normal force N and friction f.
Concept context
Newton's three laws, friction, circular motion, and free body diagrams.