Circular Motion (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Why does velocity change in circular motion at constant speed?
Why does velocity change in circular motion at constant speed?
Direction continuously changes
What type of quantity is velocity?
What type of quantity is velocity?
Vector (has magnitude and direction)
What results from changing direction in circular motion?
What results from changing direction in circular motion?
Acceleration
What is centripetal force?
What is centripetal force?
Resultant force acting towards centre in circular motion
In which direction does centripetal force act?
In which direction does centripetal force act?
Towards centre of circle
What happens to an object without centripetal force?
What happens to an object without centripetal force?
Object moves in straight line (inertia)
What provides centripetal force for a conker on a string?
What provides centripetal force for a conker on a string?
Tension in the string
What provides centripetal force for a car on a roundabout?
What provides centripetal force for a car on a roundabout?
Friction between road and tyres
What provides centripetal force for a satellite in orbit?
What provides centripetal force for a satellite in orbit?
Gravitational pull of Earth
What altitude do polar orbit satellites have?
What altitude do polar orbit satellites have?
Around km above sea level
What speed do polar orbit satellites travel at?
What speed do polar orbit satellites travel at?
Nearly m/s
What is the orbit period of geostationary satellites?
What is the orbit period of geostationary satellites?
hours
What altitude do geostationary satellites have?
What altitude do geostationary satellites have?
Around km above Earth
What speed do geostationary satellites travel at?
What speed do geostationary satellites travel at?
About m/s
How do geostationary satellites appear from the ground?
How do geostationary satellites appear from the ground?
Stay in same spot in sky