The photograph shows a water skier being pulled along by a boat. The diagram shows the horizontal forces acting on the water skier. (i) The 500 N force is the force that the boat tow rope is exerting on the water skier. Suggest what causes the 300 N force. (ii) Calculate the resultant of these two forces. (iii) State the direction of the resultant of these two forces.

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The photograph shows a water skier being pulled along by a boat - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1

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The photograph shows a water skier being pulled along by a boat. The diagram shows the horizontal forces acting on the water skier. (i) The 500 N force is the forc... show full transcript

Worked Solution & Example Answer:The photograph shows a water skier being pulled along by a boat - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1

Step 1

Suggest what causes the 300 N force.

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Answer

The 300 N force is caused by the force of water (on ski) acting against the skier, which manifests as drag or air resistance in water skiing.

Step 2

Calculate the resultant of these two forces.

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Answer

To find the resultant force, we subtract the smaller force from the larger one.

The calculation is as follows:

$ext{Resultant force} = 500 ext{ N} - 300 ext{ N} = 200 ext{ N}$

Step 3

State the direction of the resultant of these two forces.

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Answer

The direction of the resultant force is to the right, indicating the direction the skier is traveling towards the boat.

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