Momentum + Distances Flashcards
1
Q
momentum equation
A
mass x velocity
2
Q
is momentum a scalar?
A
no, vector
3
Q
conservation of momentum in closed system
A
total momentum is equal before and after an event
4
Q
what happens when two objects collide?
A
new object, new mass is total, final momentum is momentum left + momentum right
5
Q
stopping distance
A
total from when driver reacts to car at rest
6
Q
thinking distance
A
travelled whilst driver reacts
7
Q
breaking distance
A
travelled whilst breaks applied
8
Q
breaking distance is proportional to . . .
A
speed 2
9
Q
thinking distance is proportional to . . .
A
speed
10
Q
when a car speed is high . . .
A
a high breaking force is needed
11
Q
vehicle breaks
A
kinetic to thermal in tires + wheels lock = loss of control
