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Lesson 1.2 Acceleration Pre-test 2

Quiz by Omar Khorbatly

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6 questions
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  • Q1
    1. A skater increases her velocity from 2 m/s to 10 m/s in 3 seconds. What is the skater’s acceleration?
    (10 – 2)/3 = 8/3 =2.667 meters per second square
    2.22 meter per second square
    None of these
    3.44 meters per second square
    30s
  • Q2
    2. Calculate the acceleration of Josh riding his bicycle in a straight line that speeds up from 4 m/s to 6 m/s in 5 seconds.
    None of these
    4.33 meters per second square
    6.77 meters per second square
    (6 – 4) /5 = 2/5 = 0.4 meters per second square
    30s
  • Q3
    3. Cody’s car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is the acceleration of the car?
    (45 – 0) / 15 = 45/15 = 3meters per second square
    5 meters per second square
    None of these
    6 meters per second square
    30s
  • Q4
    4. Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and slows to 1 m/s over a time of 3 seconds. What is Dean’s acceleration?
    (45 – 0) / 15 = 45/15 = 3m/s2
    (6 – 4) /5 = 2/5 = 0.4 m/s2
    (10 – 2)/3 = 8/3 =2.667 m/s2
    (1 – 5.5)/3 = -4.5/3 = -1.5m/s2
    30s
  • Q5
    5. Kaya is riding her dirt bike eastward on a dirt road. She spots a pothole ahead. Kaya slows her car from 14 m/s to 5.5 m/s in 6 s. What is her acceleration?
    (1 – 5.5)/3 = -4.5/3 = -1.5m/s2
    (5.5 – 14)/6 = -8.5/6 = 3.167 m/s2
    (45 – 0) / 15 = 45/15 = 3m/s2
    (2.5 – 0.5)/5 = 2/5 = 0.4 m/s2
    30s
  • Q6
    6. A fish swimming at a constant speed of 0.5 m/s suddenly notices a shark appear behind it. Five seconds later, the fish is swimming in the same direction at a speed of 2.5 m/s. Calculate the fish’s acceleration?
    (5.5 – 14)/6 = -8.5/6 = 3.167 m/s2
    (45 – 0) / 15 = 45/15 = 3m/s2
    (1 – 5.5)/3 = -4.5/3 = -1.5m/s2
    (2.5 – 0.5)/5 = 2/5 = 0.4 m/s2
    30s

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