Motion, Vectors, and Projectiles Review. Honors Physics

Transcription

1 Motion, Vectors, and Projectiles Review Honors Physics

2 The graph below represents the relationship between velocity and time of travel for a toy car moving in a straight line. The shaded area under the line represents the toy car s a) Speed b) Acceleration c) Velocity d) Displacement

3 A toy car starts from rest and accelerates uniformly a distance of 2.0 meters in 5 seconds. The magnitude of the acceleration of the car is a) 0.16 m/s 2 b) 0.32 m/s 2 c) 0.40 m/s 2 d) 0.80 m/s 2

4 A stone is dropped off a cliff and it falls for 4 seconds before striking the water below. Approximately how far has it fallen? a) 40 m b) 65 m c) 80 m d) 160 m

5 A rock is dropped off a cliff. Which of the following graphs best shows the vertical distance traveled by the rock as it falls to the ground?

6 In the following diagram, which of the following best represents the resultant vector in the addition of vector A and vector B?

7 If vector A is directed 6 miles North and vector B is directed 8 miles East. If vector A and B are added together, then the magnitude of the resultant vector is a) 2 miles b) 10 miles c) 14 miles d) 48 miles

8 An outfielder throws a baseball to the first baseman at a speed of 19.6 meters per second and an angle of 30. above the horizontal. Which pair represents the initial horizontal velocity (vx) and initial vertical velocity (vy) of the baseball? a) vx = 17.0 m/s, vy = 9.80 m/s b) vx = 9.80 m/s, vy = 17.0 m/s c) vx = 19.4 m/s, vy = 5.90 m/s d) vx = 19.6 m/s, vy = 19.6 m/s

9 A ball is thrown with a velocity of 35 meters per second at an angle of 30. above the horizontal. Which quantity has a magnitude of zero when the ball is at the highest point in its trajectory? a) the acceleration of the ball b) the displacement of the ball c) the horizontal component of the ball s velocity d) the vertical component of the ball s velocity

10 A ball is thrown with a velocity of 35 meters per second at an angle of 30. above the horizontal. Which of the following is true regarding the acceleration of the ball during its flight? a) The acceleration is always directed upward. b) The acceleration is always directed downward. c) The acceleration is directed up and then down. d) The acceleration is always zero.

11 Answers

12 The graph below represents the relationship between velocity and time of travel for a toy car moving in a straight line. The shaded area under the line represents the toy car s a) Speed b) Acceleration c) Velocity d) Displacement

13 A toy car starts from rest and accelerates uniformly a distance of 2.0 meters in 5 seconds. The magnitude of the acceleration of the car is a) 0.16 m/s 2 b) 0.32 m/s 2 c) 0.40 m/s 2 d) 0.80 m/s 2

14 A stone is dropped off a cliff and it falls for 4 seconds before striking the water below. Approximately how far has it fallen? a) 40 m b) 65 m c) 80 m d) 160 m

15 A rock is dropped off a cliff. Which of the following graphs best shows the vertical distance traveled by the rock as it falls to the ground?

16 In the following diagram, which of the following best represents the resultant vector in the addition of vector A and vector B?

17 If vector A is directed 6 miles North and vector B is directed 8 miles East. If vector A and B are added together, then the magnitude of the resultant vector is a) 2 miles b) 10 miles c) 14 miles d) 48 miles

18 An outfielder throws a baseball to the first baseman at a speed of 19.6 meters per second and an angle of 30. above the horizontal. Which pair represents the initial horizontal velocity (vx) and initial vertical velocity (vy) of the baseball? a) vx = 17.0 m/s, vy = 9.80 m/s b) vx = 9.80 m/s, vy = 17.0 m/s c) vx = 19.4 m/s, vy = 5.90 m/s d) vx = 19.6 m/s, vy = 19.6 m/s

19 A ball is thrown with a velocity of 35 meters per second at an angle of 30. above the horizontal. Which quantity has a magnitude of zero when the ball is at the highest point in its trajectory? a) the acceleration of the ball b) the displacement of the ball c) the horizontal component of the ball s velocity d) the vertical component of the ball s velocity

20 A ball is thrown with a velocity of 35 meters per second at an angle of 30. above the horizontal. Which of the following is true regarding the acceleration of the ball during its flight? a) The acceleration is always directed upward. b) The acceleration is always directed downward. c) The acceleration is directed up and then down. d) The acceleration is always zero.