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The average speed of a car is 35 km h-. How far can it travel in 45 minutes? Ly (a) Define average speed. A 0.78 km B 129 km (b) The figure below shows the route taken by a cyclist C 26.25 km as he journeys past the places marked A, B. C and D 467 km D before returning to A. 6 pm A 6 am 2. A car accelerates uniformly from 5 m s' to 13 m s- in 4.0 s. What is the acceleration of the car in m s-?? 12 km A 0.50 10 km B 0.80 C 1.25 2 pm D D 2.00 B 9 am 3 A ball which is thrown vertically upwards at 1.2 m s- 7 km 8 km decelerates uniformly at 10 m s-2. How long will it take to reach zero velocity? C 12 noon 18 2 01 A 0.12 S Calculate the average speed in km ho B 2.4 s (i) from A to B; C 6.0 s (ii) from B to C; D 12.0 s (iii) over the whole journey. A. What information would you expect to find from a The diagram below shows the velocity-time graphs for given velocity-time graph? four particles A, B, C and D. A The velocity. B The velocity and acceleration. Velocity v/m sH C The velocity and displacement. D The velocity, displacement and acceleration. 5. Which one of the following velocity-time graphs shows an object slowing down with a non-uniform acceleration? - Time. U/S Velocity Velocity Describe the motion of these four particles. B 3. A locomotive pulling a train out from one station travels along a straight horizontal track towards another station. The graph below shows how the velocity of the train Time Time Side: varies with the time over the whole journey. Velocity/m s-1 Velocity Velocity 40 C D 30 20 10 Time Time 2 4 6 8 10 12 14 16 lime/'s Unit 2 33