CHOOSE THE BEST ANSWER FOR THE GIVEN QUESTIONS

1. Calculate how many cu. cm. of blood is in 9 packs of 1.5 pints each. Express your answer in scientific notation. A. 6587.876 cu. cm B. 6387.876 cu. cm C. 6487.876 cu. cm D. 6287.876 cu. Cm 2. A firkin is an Old British unit of volume equal to 9 gallons. How many cubic meters are there in 6.00 firkins? A. 0.216 cu. m B. 0.316 cu.m C. 0.416 cu. m D. 0.516 cu. m 3. Which of the following is the best estimate for the mass of all people living on Earth? A. 2 x 1048 kg B. 1 x 1049 kg C. 2 x 10^10 kg D. 3 x 10^11 kg 4. To convert ft2 to yd2, you should A. multiply by 3 B. multiply by 1/3 C. multiply by 9 D. multiply by 1/9 5. How many significant figures does 1.362 + 25.2 have? A. 2 B. 3 C. 4 D. 56. As it passes Grand Bahamas Islands, the eye of the hurricane Katrina is moving in a direction of 600 north of west at a speed of 50 kph. Three hours later, it shifts due north where its speed slows to 25 kph. How far from the Grand Bahamas is the eye of the hurricane 4.5 hrs. after it passes over the island? A. 163.4 km B. 173.4 km C. 183.4 km D. 193.4 km 7. Any action which tends to change the position and speed of a body A. force B. friction C. tension D. weight 8. Which of the following units could be associated with a vector quantity? A. meter/sec*2 B. kilogram/sec C. hours D. meter^3 9. Vectors with the same line of action A. collinear B. concurrent C. coplanar D. parallel 10. Vectors that lie in different lines of action intersecting at a common point A. collinear B. concurrent C. coplanar D. parallel