phys2425

# phys2425 - Name Section REVIEW Chapters 1 6 PHYS 2425...

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Name: Section: R E V I E W Chapters 1 - 6 PHYS 2425 - Brooks Select the response that best answers the given statement. Be sure to write all final multiple choice answers on your Scantron answer sheet. 1. (5.0 × 10 4) × (3.0 × 10 –6 ) = A) 1.5 × 10 –3 B) 1.5 × 10 –1 C) 1.5 × 10 1 D) 1.5 × 10 3 E) 1.5 × 10 5 2. 5.0 × 10 5 + 3.0 × 10 6 = A) 8.0 × 10 5 B) 8.0 × 10 6 C) 5.3 × 10 5 D) 3.5 × 10 5 E) 3.5 × 10 6 3. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of: A) 0.20 m 3 B) 0.14 m 3 C) 9.3 × 10 –3 m 3 D) 2.3 × 10 –3 m 3 E) 7.4 × 10 –4 m 3 4. A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at an average speed of 40 km/h. The average speed of the car for this 80 km trip is: A) 40 km/h B) 45 km/h C) 48 km/h D) 53 km/h E) 80 km/h 5. A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither. The time for this round trip is 2 hours. The average speed of the car for this round trip is: A) 0 B) 50 km/h C) 100 km/h D) 200 km/h E) cannot be calculated without knowing the acceleration 6. The coordinate of a particle in meters is given by x ( t ) = 16 t – 3.0 t 3 , where the time t is in seconds. The particle is momentarily at rest at t = A) 0.75 s B) 1.3 s C) 5.3 s D) 7.3 s E) 9.3 s 7. The velocity of an object is given as a function of time by v = 4 t – 3 t 2 , where v is in m/s and t is in seconds. Its average velocity over the interval from t = 0 to t = 2 s: A) is 0 B) is –2 m/s C) is 2 m/s D) is –4 m/s E) cannot be calculated unless the initial position is given

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8. Each of four particles move along an x axis. Their coordinates (in meters) as functions of time (in seconds) are given by particle 1: x ( t ) = 3.5 – 2.7 t 3 particle 2: x ( t ) = 3.5 + 2.7 t 3 particle 3: x ( t ) = 3.5 + 2.7 t 2 particle 4: x ( t ) = 3.5 – 3.4 t – 2.7 t 2 Which of these particles is speeding up for t > 0? A) All four B) Only 1 C) Only 2 and 3 D) Only 2, 3, and 4 E) None of them 9. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by –0.50 t , in m/s 2 for t in seconds. It stops at t = A) 64 s B) 32 s C) 16 s D) 8.0 s E) 4.0 s 10. The graph represents the straight line motion of a car. How far does the car travel between t = 2 seconds and t = 5 seconds? A) 4 m B) 12 m C) 24 m D) 36 m E) 60 m 11. An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s 2 its distance above ground level 1.0 second later is: A) 40 m B) 45 m C) 50 m D) 55 m E) 60 m 12. A stone is thrown vertically upward with an initial speed of 19.5 m/s. It will rise to a maximum height of: A) 4.9 m B) 9.8 m C) 19.4 m D) 38.8 m E) none of these 13. An object is thrown vertically upward with a certain initial velocity in a world where the acceleration due to gravity is 19.6 m/s 2 . The height to which it rises is ____ that to which the
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phys2425 - Name Section REVIEW Chapters 1 6 PHYS 2425...

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