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Practice_Test_1

# Practice_Test_1 - 1 Practice Test 1 1 If mass is measured...

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1 Practice Test 1 1. If mass is measured in kg, length in m and time in s, what is the unit of ? mass area a. kg.m b. kg/m c. kg/m 2 d. kg.m 2 2. If x is measured in ms -1 and y measured in s, what is the unit of x/y? a. ms -2 (b) m (c) ms -1 (d) s 3. If the radius of a sphere is 1.20 cm, what is its volume in m 3 ? a. 7.24 b. 7.0 × 10 -6 c. 5.2 × 10 -5 d. 7.24 × 10 -6 4. If the mass of a substance is 1.2 × 10 6 kg and its volume is 7.3 × 10 -2 m 3 , what is the mass per unit volume of the substance? a. 8.8 × 10 5 b. 8.88 × 10 5 c. 1.6 × 10 7 d. 1.6 × 10 5 5. Which of the following is a vector quantity? a. velocity b. speed c. distance d. length

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2 6. A moving object is at x = -5.0 m and at x = -1 at t = 2.0 s. What is the displacement of the object? a. –6.0 m b. -4.0 m c. 6.0 m d. 4.0 m 7. What is the velocity of the object in question 6 above? a. 6.0 m.s -1 b. -4.0 m.s -1 c. 2.0 m.s -1 d. -2.0 m.s -1 8. What is the direction of motion of the object in question 6 above? a. up b. down c. left d. right 9. Which of the following statements is NOT true of velocity? a. Velocity is the rate of change of displacement b. Velocity is the derivative of the position function c. Velocity is a vector quantity d. Velocity is the same as speed 10. The position function of a moving object is given by x = -5t + 10. which of the following is true about the velocity of this moving object? a. The velocity increases with time b. The velocity decreases with time c. The velocity remains a constant d. No conclusions can be drawn about the velocity of this object 11. What is the direction of motion of the object in question 10?
3 a. up b. down c. right d. left 12. What is the speed of the object in question 10? a. –5 m.s -1 b. 5 m.s -1 c. 10 m.s -1 d. -10 m.s -1 13. Which of the following is NOT true for an object that moves with uniform velocity? a. Its rate of change of displacement is uniform b. Its direction of motion does not change c. Its displacement increases with time d. Its acceleration is also a constant 14. Which of the following is true of an object that travels with uniform acceleration? a. A graph of its position against time is a straight line b. A graph of its velocity against time will be a straight line c. Its velocity remains a constant d. Its displacement remains a constant 15. Which of the following is the correct graph of displacement against time for uniformly accelerating object? displacement time (a) (b) displacement time

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4 displacement time (c) (d) displacement time 16. Which of the following is the graph of velocity against time for an object moving with uniform acceleration? (a) velocity time (b) velocity time (c) velocity time (d) velocity time 9.8
5 17. Which of the following is the correct graph for acceleration against time for a freely falling object? (a)

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Practice_Test_1 - 1 Practice Test 1 1 If mass is measured...

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