PH-295

Friction and air resistance

Physics · Secondary 3 · Hard · Friction and air resistance

A 500 N skydiver falls at terminal velocity. The air resistance acting on her is 500 N upwards. What is the resultant force on the skydiver and her acceleration?

Resultant force 0 N, acceleration $0\,\text{m/s}^2$
Resultant force 500 N downwards, acceleration $10\,\text{m/s}^2$ downwards
Resultant force 1000 N upwards, acceleration $20\,\text{m/s}^2$ upwards
Resultant force 500 N upwards, acceleration $10\,\text{m/s}^2$ upwards

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