Forces in Balance Flashcards
What is a resultant force?
Overall force on a point or object
If there is no resultant force, how is a vehicle moving?
At constant speed
If there is 0 resultant force, how is a vehicle moving?
It isn’t it’s stationary
If it has a non 0 resultant force, how is the vehicle moving?
accelerating or deceleration
When two vehicles interact what forces do the exert on each other?
equal and opposite, affected by mass of objects involved
What is air resistance and what does it do?
friction - slows things down
If the driving force is 1000N and the air resistance is 600N, what is the resultant force?
1000-600=400N
What is terminal velocity?
Max speed
What is the stopping distance?
distance covered from spotting a hazard to completely stopping
How is stopping distance calculated?
thinking distance + braking distance
What is thinking distance affected by?
how fast you are going and how dopey you are
What is braking distance affected by?
how fast you are going, how good your brakes are, how good your tyres are and how good the grip is on the surface
What is speed?
how fast - 30mph
What is velocity?
how fast and direction - 30 mph north
What does the line mean on a distance-time graph?
gradient=speed, flat=stationary, /or=steady speed, =back to start point, steepening curve=speeding up, leveling off curve=slowing down
