ononc y live suggested answers or Ollipientons. Seleet the one that is best in e

Question

ononc y live suggested answers or Ollipientons. Seleet the one that is best in each case and then fill in the corresponding oval on the answer sheet. Note: To simplify calculations, you may use e = 10 m/s2 in all probl Questions 1-2 3. All of the following are units of power EXCEPT (A) watts (B) joules per second (C) electron volts per second (D) newton meters per second (E) kilogram meters per second Starting from rest, a vehicle accelerates on a straight level road at the rate of 4.0 m/s2 for 5.0 s. What is the speed of the vehicle at the end of this time interval? 1. 4. A dart gun is used to fire two rubber darts with (A) 1.3 m/s (B) 10 m/s (C) 20 m/s (D) 80 m/s (E) 100 m/s different but unknown masses, M, and M2 The gun exerts the same constant force on each dart, but its magnitude F is unknown. The magnitudes of the accelerations of both darts, a and a2, respectively, are measured. Which of the following can be determined from these data? 2. What is the total distance the vehicle travels during this time interval? (A) 10 m (B) 20 m (C) 25 m (D) 40 m (E) 50 m (A) F only (B) Mi and M2 only (C) The ratio of M, and M2 only (D) F and the ratio of Mi and M2 only (E) F, M,and M2

Explanation / Answer

1) using the equation

v = u + at

v = 0 + 4*5

= 20 m/s

2) S = ut + 0.5at^2

S = 0 + 0.5*4*5^2

= 50 m

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