2a.3 - Stopping Distances Flashcards
What is the stopping distance of a vehicle?
The sum of the thinking distance and the braking distance
What affects thinking distance? (2)
- How fast you’re going
- How dopey you are
What affects breaking distance?
- How fast you’re going
- How good your breaks are
- How good the tyres are
- How good the grip is
What happens when a force moves an object through a distance?
Energy is transferred and work is done
What is the unit for energy?
Joules
What is the unit for gravitational potential energy?
Joules
What is the gravitational field strength on earth?
10 N/kg
What is gravitational field strength measured in?
N/kg
Kinetic energy transferred is the same as…
… work done
Kinetic energy gained =
Potential energy lost
Extension of an elastic object is directly proportional to …
… force
Force is directly proportional to…
…extension of an elastic object
What is wrong with force is directly proportional to extension of an elastic object?
It stops working when the force is great enough
What is the limit of proportionality?
The maximum force that the elastic object can take and still extend proportionally
