Answer Happy

ut air What of the 4. Shown are the velocity and acceleration vec- tors for a person in several different types of motion. In which case is the person slowing down and turning to her right? (A) (B) v = f ū= 1 = 7 ã=1 tə (D) T = a = 7 ts 5. Which of the curves on the graph below best represents V vs. t for a projectile fired at an angle of 45° above the horizontal, with no air resistance? 1 (A) OCTy (B) DE A (C) AB (D) AE (E) AF 0 air re- one as the Jsing Y, Z? 6. An object rests on a horizontal frictionless surface. A horizontal force of magnitude F is applied. This force produces an accelera- tion (A) only if F is larger than the weight of the object. (B) only while the object suddenly changes from rest to motion (C) as long as the force is applied. (D) only if the inertia of the object de creases. (E) only if F is increasng.