For nos. 18 - 20 refer to this situation: A car accelerates from 50 km/h to 75 km/h in 1.5 min. _18. What is the initial and final velocity in m/s? A. 13.65 m/s and 19.73 m/s C. 13.89 mis and 20.83 mis B. 12.50 m/s and 17.50 m/s D. 14.23 mis and 20.56 m/s _19. Which kinematic equation we must use to compute the acceleration based on the given information above? A. V=V, + at C. d = vt + at" B. d= ("")t D. v? = v? + 2ad 20. What is the acceleration of the car in m/s?? A. 0.03 m/s B. 0.08 m/s* C. 0.13 m/s D. 0.18 mis

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Chapter1: Units, Trigonometry. And Vectors
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Please answer 18-20 with solution or explanation

_15. A bicycle camper rides from his starting point to his first campsite one day, then continues to a
second campsite the next day. If his average speed for the two days equals the average of his speeds each
day, what must be true about his journey?
A. He rode the same amount of time each day.
B. He rode for different amounts of time each day.
C. He rode the same distance each day.
D. He rode a different distance each day.
_16. A car is moving on a straight road at a constant speed in a single direction. Which of the following
statements is true?
A. Average velocity is zero.
B. The magnitude of average velocity is equal to the average speed.
C. The magnitude of average velocity is greater than the average speed.
D. The magnitude of average velocity is less than the average speed.
_17. Which of the following set an object can accelerate?
A. By speeding up, maintaining constant velocity, or changing direction
B. By speeding up, slowing down, or changing direction
C. By maintaining constant velocity, slowing down, or changing direction
D. By speeding up, slowing down, or maintaining constant velocity
For nos. 18 - 20 refer to this situation: A car accelerates from 50 km/h to 75 km/h in 1.5 min.
_18. What is the initial and final velocity in m/s?
A. 13.65 m/s and 19.73 m/s
C. 13.89 mls and 20.83 m/s
B. 12.50 m/s and 17.50 m/s
D. 14.23 mis and 20.56 m/s
_19. Which kinematic equation we must use to compute the acceleration based on the given
information above?
C. d = vt + ar
A. V= V, + at
B. d= ()!
D. v = v + 2ad
20. What is the acceleration of the car in m/s*?
A. 0.03 m/s
B. 0.08 m/s
C. 0.13 m/s
D. 0.18 mis
Transcribed Image Text:_15. A bicycle camper rides from his starting point to his first campsite one day, then continues to a second campsite the next day. If his average speed for the two days equals the average of his speeds each day, what must be true about his journey? A. He rode the same amount of time each day. B. He rode for different amounts of time each day. C. He rode the same distance each day. D. He rode a different distance each day. _16. A car is moving on a straight road at a constant speed in a single direction. Which of the following statements is true? A. Average velocity is zero. B. The magnitude of average velocity is equal to the average speed. C. The magnitude of average velocity is greater than the average speed. D. The magnitude of average velocity is less than the average speed. _17. Which of the following set an object can accelerate? A. By speeding up, maintaining constant velocity, or changing direction B. By speeding up, slowing down, or changing direction C. By maintaining constant velocity, slowing down, or changing direction D. By speeding up, slowing down, or maintaining constant velocity For nos. 18 - 20 refer to this situation: A car accelerates from 50 km/h to 75 km/h in 1.5 min. _18. What is the initial and final velocity in m/s? A. 13.65 m/s and 19.73 m/s C. 13.89 mls and 20.83 m/s B. 12.50 m/s and 17.50 m/s D. 14.23 mis and 20.56 m/s _19. Which kinematic equation we must use to compute the acceleration based on the given information above? C. d = vt + ar A. V= V, + at B. d= ()! D. v = v + 2ad 20. What is the acceleration of the car in m/s*? A. 0.03 m/s B. 0.08 m/s C. 0.13 m/s D. 0.18 mis
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