1. Joseph runs along a long straight track. The variation of his speed v with time t is shown below.

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1 Kinematics 1. Joseph runs along a long straight track. The variation of his speed v with time t is shown below. After 25 seconds Joseph has run 200 m. Which of the following is correct at 25 seconds? Instantaneous speed / m s 1 Average speed / m s 1 A. 8 m s 1 8 m s 1 B. 8 m s 1 10 m s 1 C. 10 m s 1 8 m s 1 D. 10 m s 1 10 m s 1 IB Questionbank Physics 1

2 2. The graph shows the variation with time t of the acceleration a of an object. Which of the following is the change in velocity of the object in the time interval 0 to 4 s? A. 8 m s 1 B. 4 m s 1 C. +4 m s 1 D. +8 m s 1 IB Questionbank Physics 2

3 3. A car accelerates from rest. The acceleration increases with time. Which graph shows the variation with time t of the speed v of the car? 4. This question is about kinematics. Lucy stands on the edge of a vertical cliff and throws a stone vertically upwards. The stone leaves her hand with a speed of 15 m s 1 at the instant her hand is 80 m above the surface of the sea. Air resistance is negligible and the acceleration of free fall is 10 m s 2. IB Questionbank Physics 3

4 (a) Calculate the maximum height reached by the stone as measured from the point where it is thrown. (2) (b) Determine the time for the stone to reach the surface of the sea after leaving Lucy s hand. (3) (Total 5 marks) 5. Which of the following quantities can be determined from a speed-time graph of a particle travelling in a straight line? A. Only the magnitude of the acceleration at a given instant B. Both the velocity and the acceleration at a given instant C. Only the distance travelled in a given time D. Both the distance travelled in a given time and the magnitude of the acceleration at a given instant IB Questionbank Physics 4

5 6. Samantha walks along a horizontal path in the direction shown. The curved part of the path is a semi-circle. The magnitude of her displacement from point P to point Q is approximately A. 2 m. B. 4 m. C. 6 m. D. 8 m. 7. Which of the following may be determined from a speed-time graph? A. Displacement B. Distance C. Power D. Force IB Questionbank Physics 5

6 8. A raindrop falling from rest at time t = 0 reaches terminal velocity. Which graph best represents how the speed v varies with time t? IB Questionbank Physics 6

7 9. The graph shows how the displacement d of an object varies with time t. The tangent to the curve at time t 1 is also shown. Which of the following gives the speed of the object at point P? A. the gradient at P B. the shaded area C. D. 1 gradient at P d t 1 1 IB Questionbank Physics 7

8 10. In 1997 a high-speed car of mass kg achieved the world land speed record. The car accelerated uniformly in two stages as shown in the table. The car started from rest. Time / s Speed attained at end of stage / m s 1 Stage Stage Use the data to calculate the (a) average acceleration of the car in stage 1. (1) (b) average net force required to accelerate the car in stage 2. (3) (c) total distance travelled by the car in 12 s. (2) (Total 6 marks) IB Questionbank Physics 8

9 11. The graph is a speed versus time graph for an object that is moving in a straight line. The distance travelled by the object during the first 4.0 seconds is A. 80 m. B. 40 m. C. 20 m. D. 5 m. IB Questionbank Physics 9

10 12. A ball, initially at rest, is dropped in the air from a great height. Air resistance is not negligible. Which of the following graphs best shows the variation with time t of the acceleration a of the ball? IB Questionbank Physics 10

11 13. The graph below shows the variation with time t of the velocity v of an object moving along a straight line. The displacement of the object between t = 0 s and t = 6.0 s is A. 2.0 m. B. 12 m. C. 20 m. D. 24 m. IB Questionbank Physics 11

12 14. Two balls of different mass are dropped from the top of a tall building one after the other. The distance between the balls A. increases with time. B. depends on the initial velocity only. C. remains constant. D. depends on the mass of the balls. IB Questionbank Physics 12

13 15. The graph shows how the velocity of a particle varies with time. Which of the following graphs correctly shows how the acceleration of the particle varies with time? IB Questionbank Physics 13

14 16. A ball is thrown vertically upwards from the ground. The graph shows the variation with time t of the vertical displacement d of the ball. Which of the following gives the final displacement after time T and the average speed between time t = 0 and time t = T? Displacement Average speed A. 0 0 B. 0 2D T C. 2D 2D T D. 2D 0 IB Questionbank Physics 14

15 17. The graph below shows the variation with time t of the velocity v of an object moving on a straight-line. Which of the graphs below best represents the variation with time t of the acceleration a of the object? IB Questionbank Physics 15

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