1. PIG P5

2. The higher satellite is geostationary. What does this mean and how long does it take to orbit the Earth? Give one use of this type of satellite

3. What is the difference between a vector and a scalar quantity. Give an example of each.

4. Describe the horizontal and vertical motion of the ball.

5. Mass 4000 kg velocity 4 m/s Mass 1500 kg velocity 6 m/s Explain why the lorry has more momentum than the car. How can the car ever have more momentum than the lorry?

6. Explain in terms of momentum how these devices reduce injuries reduce injuries in crashes

7. How does the orbit of the lower satellite compare with the higher one. Explain your reason and give a use for this type of satellite.

8. When does diffraction happen the most and why do radio waves diffract more than microwaves?

9. What is the difference between constructive and destructive wave addition

10. How do Polaroid glasses help you see more clearly when near water or when it has been snowing? (2)

11. Why are radio frequencies below 30MHz suitable for long distance communication? What happens if the frequencies are above 30GHz?

12. Explain why white light disperses when pasing through a prism (2)

13. In which way does a camera lens move when changing from a distant object to a closer one?

14. What happens when light hits a surface at an angle equal to. Or above its critical angle?

15. Why does the bomb have a constant horizontal motion but accelerates downwards?

16. State two differences between real and virtual images

17. Explain in terms of path lengths, why there are light and dark spots on the screen