physics mock Flashcards
1
Q
irradation is?
A
objects exposed to background radiation sources
2
Q
contamination is?
A
unwanted radioactive particles
3
Q
whats a vector? 3eg
A
magnitude and a direction
displacement
velocity
weight
4
Q
whats a scalar (3 examples)
A
magnitude
speed
temp
mass
5
Q
centripetal force
A
resultant force when things are moving in a circular motion
6
Q
eq for force
A
f=mxa
7
Q
momentum equation
A
p = mass x velocity
8
Q
acceleration equation
A
v-u/t v = final u = initial
9
Q
displacement
A
distance in a given direction (without obstacles)
10
Q
change in a graph is?
A
up axis divide across axis
11
Q
eq for weight
A
w = mass x gravity
12
Q
stopping distance
A
thinking distance + breaking distance
13
Q
what effects thinking distance
A
- age
- drink
- drugs
- tiredness
14
Q
what effects breaking distance
A
- condition of tyres
- weight of cars
- condition of road (snow rain etc)
15
Q
kinetic energy
A
0.5 x mass x velocity²
