Fig. 1.1 shows the directions of four forces acting on a racing car as it travels in a horizontal straight line. [Figure 1.1]

1. (a)Draw a line from each box on the left to the correct description of each force. force A driving force force B contact or normal reaction force force C air resistance and friction force D force of gravity[1]
2. (b)(i)The table shows the sizes of the forces acting on the car at one time. force A/N: 8000 force B/N: 1000 force C/N: 8000 force D/N: 600 The gravitational field strength g is 10N/kg. Calculate the mass of the car,[1]
3. (b)(ii)the resultant force on the car,[1]
4. (b)(iii)the acceleration of the car.[2]
5. (c)At another time, the car is travelling at speed u. It then accelerates for 5.0 s with an acceleration of 1.6 m/s², and reaches a speed of 20 m/s. Calculate the value of u.[2]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.