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q2

3) A swimmer dives off a boat.
Look at Figure 2. 
Picture
3.1) What two factors determine the momentum of the swimmer? [2 marks]
  1. ​________________________________________________________
  2. ________________________________________________________

3.2) 
What is the unit of momentum? [1 mark]
​Tick one box. 
Picture
3.3) The boat was stationary.
As the swimmer dives forwards, the boat moves backwards.
Use the idea of conservation of momentum to explain why the boat moves backwards. [4 marks]

3.4) Explain what would happen to the motion of the boat if there were more people on the boat when the swimmer dived off. [2 marks]

​3.5) 
Picture
The swimmer’s speed increases as she swims away from the boat.
The swimmer has a top speed.
​Explain why. [5 marks]

​​​​​​(Total for Question 3 = 14 marks)
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