2. Suppose A = B/C, where B has the dimension LZT-1, C has the dimension L-1M. The A has dimensions: A. LM /T B. 13 / TM D. L2 T / M C. TM / LZ E. M/LT 3. The angle between A = -25.01 - 45.0j and the positive x axis is: A. 29.0 D. 241 B. 61.0 E. 2990 C. 109 4. A delivery truck leaves a warehouse and travels 3.10 km south. The truck makes a right turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. What is the magnitude and direction of the truck's displacement from the warehouse? A. 2.11 km, 36.3 west of south D. 4.67 km, 15.50 east of south B. 4.67 km, 15.50 west of south E. None of the above C. 2.11 km, 36.3 east of south 5. A particle moves along x axis from x; to xf . Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude: A. Xi = 4m, xf = 6m D. xi = 4m, xf = -2m B. Xi = -4m, xf = -8m E. xi = 4m, xf = -4m C. xi = -4m, xf = 2m 6. A car travels 30 miles at an average speed of 60 mph and then travels 30 miles at an average speed of 30 mph. The average speed of the car for this 60 miles trip is: A. 35 mph D. 50 mph B. 53 mph E. 40 mph C. 45 mph2. A golfer tees off on a platform above the ground, giving ball A an initial speed of 69.0 m/s and an initial direction of 40.0\" above the horizontal. If ball A is in ight for 10.00 sec. how high above the ground is the platform, (b) what is the horizontal displacement of ball A when it lands on the ground, (c) what is the ball A's landing angle, and (d) what is the maximum height that ball A can reach? If next golfer in the group hits ball B at an angle 55.0 above the horizontal and ball B has the same horizontal displacement as ball A. (e) what is the initial speed of ball B, and (t) how long is ball B in ight? (Air resistance can be neglected.) 7. An arrow was shot upward into the air. Five seconds later, the velocity of the arrow is 31.0 m/s downward, what is the initial velocity of the arrow? (Air resistance can be ignored.) A. 80.0 m/s, upward D. 18.0 m/s, downward B. 80.0 m/s, downward E. None of the above C. 18.0 m/s, upward 8. A car is traveling at a constant speed of 20.0 m/s when it is shifted into neutral. After traveling 30.0 m, the speed of the car reduces to 5.00 m/s. What is the acceleration of the car? A. -9.81 m/s2 D. -6.25 m/s2 B. -0.500 m/s2 E. None of the above. C. -2.00 m/s2 9. A baseball is thrown vertically into the air. The acceleration of the ball at its highest point is: A. zero B. 9.8 m/s2 up C. 9.8 m/s2 down D. changing suddenly from 9.8 m/s2 up to 9.8 m/s2 down E. cannot be calculated without knowing the initial velocity 10. A boat moves at 10.00 m/s relative to the water. If the boat is in a river where the current is 2.000 m/s, how long does it take the boat to make a complete round trip of 1.000 x 105 m upstream followed by a 1.000 x 103 m downstream? A. 200.0 s D. 204.1 s B. 208.3 s E. None of the above. C. 196.1 s3. Jet airliner A moving at 2.200 X 102 m/s due east moves into a region where the wind is blowing at 56.00 m/s in a direction 30.00 nonh of cast. (a) What are the new magnitude and direction of the velocity of the aircraft? In order for jet airliner A to continue to travel due east, (b) what direction should the aircraft travel and (c) how much time does the aircraft take to travel 1.000 X 10' m? Jet airliner B moving at 2.200 x 102 m/s due south moves into the same region where the wind is blowing at 56.00 m/s in a direction 30.00 north of east. ((1) What direction should aircraft B travel in order for B to continue to travel due south? (e) How much time does aircraft B take to travel 1.000 x 10' m due south? 35.0 m above the ground. (a) How long does it take the stone to reach the ground? (b) What is the speed of the stone right before it hits the ground? Stone 2 is thrown vertically downward 1.50 s after stone 1 was released. (c) What initial speed should stone 2 have in 0rd ground at the same time? (d) What is the initial speed of stone 2, (e) how long does height that stone 3 can reach? er for both stone 1 and stone 2 to reach the nal speed of stone 2? If stone 3 is thrown upward with the it take stone 3 to reach the ground and (0 what is the maximum