Quiz_ quizmotion1D.pdf

6/22/23, 12:47 AM Quiz: quizmotion1D https://sjeccd.instructure.com/courses/37200/quizzes/243163/take 1/10 quizmotion1D Started: Jun 22 at 12:02am Quiz Instructions 2 attempts 50mins 2 pts Question 1 6.00 s 4.50 s 3.60 s 4.00 s 9.00 s An automobile traveling along a straight road increases its speed from 30.0 m/s to 50.0 m/s in a distance of 180 m. If the acceleration is constant, how much time elapses while the auto moves this distance? 2 pts Question 2 24 m/s zero 12 m/s 48 m/s 36 m/s A particle moving along the x axis has a position given by x = (24 t – 2.0 t ) m, where t is measured in s. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero? 3 2 2 2 2 1 pts Question 3

6/22/23, 12:47 AM Quiz: quizmotion1D https://sjeccd.instructure.com/courses/37200/quizzes/243163/take 2/10 x − x . v − v . x . v . a . The area under a graph of a vs. t from t = t to t = t represents x i f f i f i av av av 1 pts Question 4 Instructions : On occasion, the notation will be a shorthand notation for . Exhibit 3-2 A child starts at one corner of a cubical jungle gym in a playground and climbs up to the diagonally opposite corner. The original corner is the coordinate origin, and the x , y and z axes are oriented along the jungle gym edges. The length of each side is 2 m. Use this exhibit to answer the following question(s). Refer to Exhibit 3-2. The child's displacement is:

6/22/23, 12:47 AM Quiz: quizmotion1D https://sjeccd.instructure.com/courses/37200/quizzes/243163/take 3/10 2 pts Question 5 19 m/s 4.7 m/s 10 m/s 34 m/s 17 m/s A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground. Determine the initial speed of the ball. 2 pts Question 6 +15 m/s − 15 m/s +30 m/s At t = 0, a particle is located at x = 25 m and has a velocity of 15 m/s in the positive x direction. The acceleration of the particle varies with time as shown in the diagram. What is the velocity of the particle at t = 5.0 s?

6/22/23, 12:47 AM Quiz: quizmotion1D https://sjeccd.instructure.com/courses/37200/quizzes/243163/take 4/10 0 − 1.2 m/s 2 pts Question 7 The particle remains at rest after t = 3.0 s. The particle no longer accelerates after t = 3.0 s. The particle can be found at positions x < 0 m only when t < 0 s. All of the above are correct. None of the above is correct. A particle moving along the x axis has a position given by x = 54 t − 2.0 t m. At the time t = 3.0 s, the speed of the particle is zero. Which statement is correct? 3 3 pts Question 8 − 500 km/s − 550 km/s − 360 km/s − 520 km/s − 275 km/s A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board? 2 2 2 2 2 3 pts Question 9 Instructions : On occasion, the notation will be a shorthand notation for .

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