PH-165
Friction and air resistance
Physics · Secondary 3 · Hard · Friction and air resistance
A 5 kg object is falling vertically and reaches a constant speed after some time. Its weight is 50 N. What is the magnitude of the air resistance acting on the object when it is moving at constant speed?
- 50 N
- 5 N
- 0 N
- 10 N
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