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5. On a horizontal grassland, John rolls a ball for his dog to catch. At time t = 0, John stands side by side with the dog and rolls the ball forward in a straight line. The dog immediately starts to run towards the ball. Figure 5.1 shows an instant at which the dog is running toward the ball. John Figure 5.1 The ball stops after a while, and the dog reaches the ball some time later. The velocity- time graph of the dog is shown in Figure 5.2. velocity/m s¹ 6 4 2 0 1 2 34 time / s 5 Figure 5.2 (a) Describe the motion of the dog between t = 0 s and 5.5 s. (3 marks) (b) The dog reaches the ball at t = 5.5 s. How far did the ball roll? (2 marks) (c) John rolls the ball with an initial velocity of 6 m s¹ and it decelerates uniformly afterwards. Draw the velocity-time graph of the ball in Figure 5.2. (2 marks)

5. On a horizontal grassland, John rolls a ball for his dog to catch. At time t = 0, John stands side by side with the dog and rolls the ball forward in a straight line. The dog immediately starts to run towards the ball. Figure 5.1 shows an instant at which the dog is running toward the ball. John Figure 5.1 The ball stops after a while, and the dog reaches the ball some time later. The velocity- time graph of the dog is shown in Figure 5.2. velocity/m s¹ 6 4 2 0 1 2 34 time / s 5 Figure 5.2 (a) Describe the motion of the dog between t = 0 s and 5.5 s. (3 marks) (b) The dog reaches the ball at t = 5.5 s. How far did the ball roll? (2 marks) (c) John rolls the ball with an initial velocity of 6 m s¹ and it decelerates uniformly afterwards. Draw the velocity-time graph of the ball in Figure 5.2. (2 marks)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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5. On a horizontal grassland, John rolls a ball for his dog to catch. At time t = 0, John stands side by side with the dog and rolls the ball forward in a straight line. The dog immediately starts to run towards the ball. Figure 5.1 shows an instant at which the dog is running toward the ball. John Figure 5.1 The ball stops after a while, and the dog reaches the ball some time later. The velocity- time graph of the dog is shown in Figure 5.2. velocity/m s¹ 6 4 2 0 1 2 34 time / s 5 Figure 5.2
Transcribed Image Text:5. On a horizontal grassland, John rolls a ball for his dog to catch. At time t = 0, John stands side by side with the dog and rolls the ball forward in a straight line. The dog immediately starts to run towards the ball. Figure 5.1 shows an instant at which the dog is running toward the ball. John Figure 5.1 The ball stops after a while, and the dog reaches the ball some time later. The velocity- time graph of the dog is shown in Figure 5.2. velocity/m s¹ 6 4 2 0 1 2 34 time / s 5 Figure 5.2
(a) Describe the motion of the dog between t = 0 s and 5.5 s. (3 marks) (b) The dog reaches the ball at t = 5.5 s. How far did the ball roll? (2 marks) (c) John rolls the ball with an initial velocity of 6 m s¹ and it decelerates uniformly afterwards. Draw the velocity-time graph of the ball in Figure 5.2. (2 marks)
Transcribed Image Text:(a) Describe the motion of the dog between t = 0 s and 5.5 s. (3 marks) (b) The dog reaches the ball at t = 5.5 s. How far did the ball roll? (2 marks) (c) John rolls the ball with an initial velocity of 6 m s¹ and it decelerates uniformly afterwards. Draw the velocity-time graph of the ball in Figure 5.2. (2 marks)
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