An autonomous underwater vehicle (AUV) is navigating a straight, horizontal research canal.
The horizontal forces acting on the AUV are shown below:
- Propeller thrust = 4200 N (forward)
- Water drag = 2650 N (backward)
- Friction from its tether cable dragging along the bed = 850 N (backward)
Determine the magnitude of the resultant horizontal force on the AUV.
Describe the horizontal motion of the AUV.
Water drag and tether friction are contact forces. Give one other example of a contact force.
Forces and their interactions Questions
Practise AQA GCSE Physics Forces and their interactions with exam-style questions for Foundation and Higher tier. 13 questions covering Scalar and vector quantities, Contact and non-contact forces, Gravity, and Resultant forces, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.