Answer the following grade 12 physics multiple choice questions.

1. Linda walks 300 m [E], then 300 m [N]. What direction must she walk to return directly to her starting point? a. [45' E of S] b. [45' W of S] C. [45' E of N] d. [45' W of N] 2. An airplane flies 25 km [W] and then 60.0 km [S] in a total time of 0.50 h. What is the average speed of the airplane? a. 170 km/h b. 130 km/h C. 120 km/h d 85 km/h 3. A boat leaves a marina and sails 2.0 km [S], then 2.0 km [E], then 2.0 km [N], and finally 2.0 km [W], taking a total time of 2.0 h for the trip. What is the magnitude of the average velocity of the boat? a. 8.0 km/h b. 4.0 km/h C. 2.0 km/h d. 0 km/h 4. Which term describes the change in position of an object? a. acceleration b. velocity C. displacement d speed 5. A ship started from rest and accelerated at 0.20 m/s'. How long would it take to reach 5.0 m/s? a. 25 s b. 5.0 s C. 2.5 s 0.20 s 6. A basketball is thrown upwards. After leaving the player's hands, it slows down, comes to a stop, accelerates downwards, and comes to a stop on the ground. When is the basketball in free fall? a. from the time it leaves the player's hands to the time it contacts the ground b. from the time the player starts to throw it upward until the time it contacts the ground from the time it leaves the player's hands to the time it comes to a stop at the top of its flight d. from the top of its flight to the time it contacts the ground 7. An object undergoes a displacement Ad, followed by a second displacement Adz. Which vector represents the total displacement, according to the scale diagram method? a. a b. C. 8. An object was displaced 3.0 m [N] and then 4.0 m [W]. What was total displacement of the object? a. 7.0 m [W 37' N] b. 5.0 m [W 37' N] C. 7.0 m [W 53' N] d. 5.0 m [W 53' N] 9. Two baseball pitchers are standing on a tall building. One throws a red ball horizontally. The other drops a green ball straight down. Which statement is correct? a. The green ball hits the ground first. b. The red ball hits the ground first. c. Both balls hit the ground at the same time. d. It is not possible to determine which ball will hit the ground first with the information given. 10. An archer shoots an arrow at 120 m/s at an angle of 45.0 above the horizontal. Which statement is correct? a. The horizontal component of the initial velocity has a magnitude of 120 m/s. b. The vertical component of the initial velocity has a magnitude of 120 m/s. C. The magnitude of the vertical component of the initial velocity equals the magnitude of the horizontal component of the initial velocity. d. All of these are correct