Mid Term PHYS 203 - Spring 2018 Name: Multiple Choice: 1. The cgs unit of speed

Question

Mid Term PHYS 203 - Spring 2018 Name: Multiple Choice: 1. The cgs unit of speed is (a)cm/s (b)s/cm2 (c) crn/mim2 (d) m/s 2. Which one is a scalar quantity? (a) displacement speed (e) both a and b (d) none 3. The fundamental units in FPS system are: (a) 3 (b)4 (c) 6 (d)7 4. 1 A is equal to (a) 1012 m (b) 10 (c) 10° m (d) 10-10 m 5. If the number 46.70 is multiplied by the number 130 the correct answer with the proper number of significant figures is (a) 6100 ((b)6070 (c) 6071 (d) 6071.0 6. Your car's instantancous velocity is 11.9i+19.65 j.Your speed is (a) 22.8 m/s; (b) 25.6 m/s; (c) 31.4 m/s; (d) 33.6 m/s. 7. What is your average speed when you run at 4.0 m/s for 60 m, then 6.0 m/s for another 60 m? (a) 4.8 m/s (b) 5.0 m/s (c) 5.2 m/s (d) 5.4 m/s 8. The maximum range (on level ground) of a projectile launched at 25.5 m/s is (a) 2.8 m; (b) 47.0 m; (c) 66.4 m; (d) 250 m. 5 328

Explanation / Answer

(1) The cgs unit of speed is cm/s.

(2) Speed is a scalar quantity.

(3) There are 7 fundamental units.

(4) One angstrom is ten to the power of negative ten.

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