Topic 3, Question 1: An object travels from right to left. If the object is slowing down, the applied force vector is best represented by: a vector pointing up, a vector pointing to the right, a vector pointing down, a vector pointing to the left, or a vector of magnitude zero.
Topic 3, Question 2: An object of mass 5 kg is acted upon by four forces, each of magnitude 10 N. Which of the following could NOT be the acceleration of the object? A) 0 m/s^2, B) 2 m/s^2, C) 4 m/s^2, D) 8 m/s^2, or E) 10 m/s^2.
Topic 3, Question 3: A block of weight W is pulled along a horizontal surface at constant speed v by a force F, which acts at an angle of θ with the horizontal, as shown below. The normal force exerted on the block by the surface has magnitude: A) W - F cosθ, B) W - F sinθ, C) W, D) W + F cosθ, or E) W + F sinθ.