[Figure 9.1] shows an astronaut in space near to a space station in orbit above the Earth. The total mass of the astronaut and all his equipment is 160 kg. The astronaut is initially at rest relative to the space station but he is then pulled towards the space station by the rope. His acceleration towards the space station is 0.35m/s² for 1.2s.

1. (a)(i)Calculate the resultant force that causes a mass of 160kg to accelerate at 0.35 m/s²,[2]
2. (a)(ii)the speed at which the astronaut is travelling after 1.2s.[2]
3. (b)(i)The resultant force on the astronaut is constant for 1.2s, but then it decreases to zero instantly as the rope becomes slack. On [Figure 9.2], sketch the speed-time graph for the astronaut for the first 3.0s of his motion.[2]
4. (b)(ii)Describe how the distance moved by the astronaut during the first 3.0s may be found using the speed-time graph.[2]
5. (c)(i) 1.The space station is travelling at a constant speed in a circular orbit around the Earth as shown in [Figure 9.3]. A force acts on the space station to keep it in this orbit. On [Figure 9.3], draw an arrow to show the direction of this force.[1]
6. (c)(i) 2.Explain what causes this force.[2]
7. (c)(ii)State what is meant by the velocity of an object.[2]
8. (c)(iii) 1.State and explain what happens during the orbit to the velocity of the space station,[1]
9. (c)(iii) 2.the kinetic energy of the space station.[1]

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.