1 .		If you drive west at 20 km/h for one hour, then drive east at 15 km/h for one hour, your net displacement will be [Hint]   5 km east.   35 km west.   35 km east.   5 km west.
2 .		A 200-lb force is pulling on an object, as shown. The sign of the x and y components of the force are [Hint]   x (positive), y (positive).   x (positive), y (negative).   x (negative), y (positive).   x (negative), y (negative).
3 .		Three boys each pull with a 20-N force on the same object. The resultant force will be [Hint]   zero.   20 N to the left.   20 N up.   20 N down.
4 .		Consider a plane flying with groundspeed Vg and airspeed Va in a wind with speed V. Which of the following relationships is true? [Hint]   Vg will always equal Va + V.   Vg can be greater than Va + V.   Vg can be less than Va – V.   Vg can have any value between Va + V and Va – V.
5 .		Two vectors, R and S, are known: If vector S is subtracted from vector R, the vector T = R – S is [Hint]
6 .		Two vectors, R and S, are known: If vector R is subtracted from vector S, the vector T = R – S is [Hint]
7 .		Two vectors, R and S, are known: If vector S is added to the vector R, then the vector T = R + S is [Hint]
8 .		If the acceleration vector of a body is perpendicular to the velocity vector, which of the following must be true? [Hint]   The speed is changing.   The direction is changing.   Both the speed and the direction are changing.   The direction is not changing.
9 .		A vector of magnitude 10 has an angle with the positive x axis (East) of 120 degrees. What are its components? [Hint]   5 and 8.7   –5 and 8.7   5 and –8.7   –5 and –8.7
10 .		A vector of magnitude 10 has an angle with the positive x axis (East) of –60 degrees. What are its components? [Hint]   5 and 8.7   –5 and 8.7   5 and –8.7   –5 and –8.7
11 .		A vector has components x = 6 m and y = 8 m. What are its magnitude and direction? [Hint]   10 m and 30 degrees   14 m and 37 degrees   10 m and 53 degrees   14 m and 53 degrees
12 .		A vector has components x = –2 m and y = –2 m. What is its direction (angle with respect to East)? [Hint]   45 degrees   135 degrees   225 degrees   –45 degrees
13 .		Three vectors have components (x,y): A = (2,3), B = (4,–7), and C = (–6,–3). What is the magnitude of the resultant vector (D = A + B + C)? [Hint]   –7   17.7   15   7
14 .		Three vectors have components (x,y): A = (2,3), B = (4,–7), and C = (–6,–3). What is the magnitude of the resultant vector (D = A – B – C)? [Hint]   13.6   15   52   7
15 .		Where in the above figure is the velocity positive? [Hint]   A   B   C   D   E   F
16 .		At which point in the figure in Question 15 is the velocity and acceleration zero? [Hint]   A   B   C   D   E   F
17 .		At which point in the figure in Question 15 is the velocity zero and the acceleration positive? [Hint]   A   B   C   D   E   F
18 .		At which point in the figure in Question 15 is the speed the greatest? [Hint]   A   B   C   D   E   F
19 .		At which point in the figure in Question 15 is the velocity zero and the acceleration negative? [Hint]   A   B   C   D   E   F
20 .		At which points in the figure in Question 15 are the velocity and acceleration negative? [Hint]   B, E, and F   A and C   C and D
21 .		At which points in the figure in Question 15 is the acceleration zero? [Hint]   B, E, and F   A and C   C and D
22 .		If the sum of two vectors equals zero, the magnitude of their difference is [Hint]   equal to the magnitude of either one.   equal to twice the magnitude of either one.   less than twice the magnitude of either one.
23 .		A sailboat traveling with a speed of 4 knots through the water heads directly upriver against a 3-knot current. Its speed over ground is [Hint]   1 knot.   7 knots.   3 knots.   5 knots.
24 .		A sailboat traveling with a speed of 4 knots through the water heads directly downriver with a 3-knot current. Its speed over ground is [Hint]   1 knot.   3 knots.   5 knots.   7 knots.
25 .		A sailboat traveling with a speed of 4 knots through the water heads directly across a river which has a 3-knot current. Its speed over ground is [Hint]   1 knot.   3 knots.   5 knots.   7 knots.