Motion (C3) Flashcards
D distance
the length an object has travelled from the origin
D displacement
distance travelled in a particle direction (vector)
area of a speed time graph?
distance
Gradient of a displacement-time graph
velocity
What are suvats used for?
constant acceleration
Stopping distance = ?
thinking distance +braking distance
What is thinking distance?
distance travelled between seeing a hazard and touching the break
How does thinking distance vary with velocity
linearly (thinking time is constant)
What factors influence thinking distance
drink, drugs, being tired, phone use
What is braking distance
distance between touching brake and stopping
How does braking distance vary
with velocity squared as it is related to KE
What is affected by roads, brakes, tires and the weather
braking distance
What is Newtons first law?
An object will remain in equilibrium (at rest or at a linear cosntant speed) unless acted on by another force
What is newtons second law
Force = impulse over time, which also infers F=ma
What is newtons third law
For every action there is an equal and opposite reaction
