College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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I cant do number 27.
14 25. A car which is initially at rest rolls down a A smooth inclined plane as shown below. Which of the speed-time graphs best represents the motion of the car? A speed B speed C speed C A friction C weight 40 20- time 26. A heavy-laden trolley in a supermarket is difficult to start from rest and difficult to stop while it is moving. This is due to its B inertia D 0 +time 1 1 2 0 D speed 27. The following graph represents two objects A and B in a state of linear motion. Which one of the following statements is correct? velocity/m s-1 3 momentum 4 5 B 0 -A time time/s time B A B overtakes A at the end of the third second. B overtakes A at the end of the fifth second. In the first three seconds, the average speed of B is greater than that of A. D In the first five seconds, the average speed of B is greater than that of A. ( ) All About Physics: Multiple-Choice Questions Workout 'O' level 28. A car slides down an inclined surface PQ and moves horizontally along QS. QR is a rough surface whilst PQ and RS are frictionless. Between which of the following points on its path does the object move with constant speed? A P and Q CR and Swole A C 29. On which of these slopes does the ball roll down with increasing speed and decreasing acceleration? (Neglect frictional forces) v/m s smooth surface 16. rough surface smooth surface R ein a S 89 30. The figure below shows the acceleration-time graph of an object, moving towards the right. a/m s-2 A 2 C v/m s¹ 16 8: 8: a B Q and R DQ and S Which of the following curves correctly shows the velocity-time graph of the object? A B 24 t/s B 24 t/s D D 24 v/m s 16- 16 8 v/m s-1 -t/s t/s -t/s
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Transcribed Image Text:14 25. A car which is initially at rest rolls down a A smooth inclined plane as shown below. Which of the speed-time graphs best represents the motion of the car? A speed B speed C speed C A friction C weight 40 20- time 26. A heavy-laden trolley in a supermarket is difficult to start from rest and difficult to stop while it is moving. This is due to its B inertia D 0 +time 1 1 2 0 D speed 27. The following graph represents two objects A and B in a state of linear motion. Which one of the following statements is correct? velocity/m s-1 3 momentum 4 5 B 0 -A time time/s time B A B overtakes A at the end of the third second. B overtakes A at the end of the fifth second. In the first three seconds, the average speed of B is greater than that of A. D In the first five seconds, the average speed of B is greater than that of A. ( ) All About Physics: Multiple-Choice Questions Workout 'O' level 28. A car slides down an inclined surface PQ and moves horizontally along QS. QR is a rough surface whilst PQ and RS are frictionless. Between which of the following points on its path does the object move with constant speed? A P and Q CR and Swole A C 29. On which of these slopes does the ball roll down with increasing speed and decreasing acceleration? (Neglect frictional forces) v/m s smooth surface 16. rough surface smooth surface R ein a S 89 30. The figure below shows the acceleration-time graph of an object, moving towards the right. a/m s-2 A 2 C v/m s¹ 16 8: 8: a B Q and R DQ and S Which of the following curves correctly shows the velocity-time graph of the object? A B 24 t/s B 24 t/s D D 24 v/m s 16- 16 8 v/m s-1 -t/s t/s -t/s
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