Answer Happy

A В. C D. E I only 11 only III only II and III only 1. 11, and III 2. Which 1 Whe down IL Whers 11 9. A particle in the xy-planc urtdergoes a displacement s = (3.0 i + 4.07) masa constant forco = (5.0 i +2.0 ) Nacts on the particle. What is the angle between the displacements and the force ? A. 24.0° B. 58.6° C. 39.1° D. 41.0° E. 31.39 10. A projectile is fired upward at an angle a above the horizontal with an initial speed vo. At its maximum height, which of the following is true about the motion of the projectile? 1. Its velocity vector is zero II. Its speed is vo cosa TIL. Its acceleration vector is 9.8 ms 2 downward. A. I only B. II only C. III only D. I and III E. II and III 11. A package falls out of an airplane that is flying in a straight line at a constant altitude and speed. If you ignore air resistance, which of the following statements about the path of the package is correct? The path of the package as observed by A. the pilot is a vertical line. B. a person on the ground is a vertical line C. the pilot is a horizontal line. D. the pilot is a parabola. E. a person on the ground is a horizontal line a a 3