5. A child throws a ball straight up in the air, which then falls and bounces off the floor. The y-velocity versus time of the ball is plotted from when the ball is released until after it bounces on the floor. Up is +y. -2 a. What was the average y-acceleration of the ball during the time it is in contact with the ground (during the bounce)? Be sure to include the correct sign." -4 -6 -8 0.2 0.4 0.6 0.8 1.2 1.4 Time (seconds) ........... b. How high does the ball go above its release point?. 6. A car is moving at 10 m/s at 30° west of north. Write the velocity vector in component vector form (i.e., using î and j) taking +x to be east and +y to be north. Use cos(30°) = 0.87, sin(30°) = 0.5. Hint: draw the vector and make sure you get the signs and trig functions correct! 7. BONUS: The position of a rabbit is given by: 7(t) = [(7m +5 t)i + (3t)| as a function of time t. What is the velocity as a function of time? y-velocity (m/s) 4.

5. A child throws a ball straight up in the air, which then falls and bounces off the floor. The y-velocity versus time of the ball is plotted from when the ball is released until after it bounces on the floor. Up is +y. -2 a. What was the average y-acceleration of the ball during the time it is in contact with the ground (during the bounce)? Be sure to include the correct sign." -4 -6 -8 0.2 0.4 0.6 0.8 1.2 1.4 Time (seconds) ........... b. How high does the ball go above its release point?. 6. A car is moving at 10 m/s at 30° west of north. Write the velocity vector in component vector form (i.e., using î and j) taking +x to be east and +y to be north. Use cos(30°) = 0.87, sin(30°) = 0.5. Hint: draw the vector and make sure you get the signs and trig functions correct! 7. BONUS: The position of a rabbit is given by: 7(t) = [(7m +5 t)i + (3t)| as a function of time t. What is the velocity as a function of time? y-velocity (m/s) 4.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 2.7OQ: When the pilot reverses the propeller in a boat moving north, the boat moves with an acceleration...

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