AP Physics Fall Final Exam – Kinematics |Answer key at the end

AP Physics Fall Final Exam – Kinematics (Answer key at the end) 1. A car travels 30 miles at an average speed of 60 miles per hour and then 30 miles at an average speed of 30 miles per hour. The average speed the car over the 60 miles is (A) 35 m.p.h. (B) 40 m.p.h. (C) 45 m.p.h. (D) 10 m.p.h. (E) 53 m.p.h. Questions 2 – 4 relate to two particles that start at x = 0 at t = 0 and move in one dimension independently of one another. Graphs, of the velocity of each particle versus time are shown below Particle A Particle B 2. Which particle is farthest from the origin at t = 2 seconds. (A) A (B) B (C) they are in the same location at t = 2 seconds (D) They are the same distance from the origin, but in opposite directions (E) It is not possible to determine 3. Which particle moves with constant non-zero acceleration? (A) A (B) B (C) both A and B (D) neither A nor B (E) It is not possible to determine 4. Which particle is in its initial position at t = 2 seconds? (A) A (B) B (C) both A and B (D) neither A nor B (E) It is not possible to determine 5. The graph above shows the velocity versus time for an object moving in a straight line. At what time after t = 0 does the object again pass through its initial position? (A) Between 0 and 1 s (B) 1 s (C) Between 1 and 2 s (D) 2 s (E) Between 2 and 3 s 6. A body moving in the positive x direction passes the origin at time t = 0. Between t = 0 and t = 1 second, the body has a constant speed of 24 meters per second. At t = 1 second, the body is given a constant acceleration of 6 meters per second squared in the negative x direction. The position x of the body at t = 11 seconds is (A) + 99m (B) + 36m (C) – 36 m (D) – 75 m (E) – 99 m 7. The displacement, x, of an object moving along the x-axis is shown above as a function of time, t. The acceleration of this object must be (A) zero (B) constant but not zero (C) increasing (D) decreasing (E) equal to g 2d 8. A 2-kilogram block rests at the edge of a platform that is 10 meters above level ground. The block is launched horizontally from the edge of the platform with an initial speed of 3 meters per second. Air resistance is negligible. The time it will take for the block to reach the ground is most nearly (A) 0.3 s (B) 1.0 s (C) 1.4 s (D) 2.0 s (E) 3.0 s 9. A diver initially moving horizontally with speed v dives off the edge of a vertical cliff and lands in the water a distance d from the base of the cliff. How far from the base of the cliff would the diver have landed if the diver initially had been moving horizontally with speed 2v? (A) d (B) (C) 2d (D) 4d (E) can’t be determined without knowing the height of the cliff 10. A truck traveled 400 meters north in 80 seconds, and then it traveled 300 meters east in 70 seconds. The magnitude of the average velocity of the truck was most nearly (A) 1.2 m/s (B) 3.3 m/s (C) 4.6 m/s (D) 6.6 m/s (E) 9.3 m/s 11. A projectile is fired with initial velocity vo at an angle 0 with the horizontal and follows the trajectory shown above. Which of the following pairs of graphs best represents the vertical components of the velocity and acceleration, v and a, respectively, of the projectile as functions of time t? 12.