4. In each of the following, use the equation and data provided to calculate the

Question

4. In each of the following, use the equation and data provided to calculate the requested value. Use correct units and significant figures. 5. Which of the following is not a vector quantity? emperature b), velocity c) acceleration d). displacement e) force 6. A European sports car dealer claims that his car will accelerate at a constant the acceleration? rate from rest to 27.8m/s in 8.00 s. If so, what is a 3.48 m/sb. 6.82 m/s c. 114/s d. 17.4 m/s e. 19.5 m/s 7. An object moves 8.0cm in 1/30 of a second. Calculate the average velocity using the formula vev c)0.021m/s a) 2.4m/s b) 5.0m/s c)210m/s d)2.1m/s 8. What class of errors is assumed to be the basis for statistical variations in measurements? b) systemic b) 7.77g/cm's b) 2.00m/s a)Personal c) random 9. A cylinder has a length of 3.23 cm, a diameter of 1.75cm, and a mass of 65.3 g. The density of the cylinder is a)7.765g / cm" c) 7.765kg/ d) 7.8g/cm? 10. A net force of 3.50 N acts on a 1.75 kg object. What is the acceleration of the object? a) 2m/s c) 2.00m d) 2.0m/ s 11. A metal cylinder has a diameter of 20cm and a length of 5.0cm. What is the volume using the formula V TIRL a) 15.7cm b)3.14x10x 5 cm c)3.14 x 20x 5 cm d)none of these 12. What is the mass of 10ml of milk if its density is 0.5g/ml using the formula D-m/V? a) 50g b)5g c)5.0g d)none of these

Explanation / Answer

4) a: D = m/v = 58.2/17 = 3.423 g/ml

b: A = pi*r2 = 3.14*3.82 = 45.3416cm2

c: V= 3.14 x 0.352 x 6.11 = 2.350cm2

5. a: Temperature

6. Acceleration = 27.8/8 = 3.475 = 3.48m/s2 (Option A)

7. V = 8/(1/30) = 240cm/s = 2.4m/s (Option A)

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