P8 Revision Flashcards
1
Q
What are Vector quantities?
A
A vector quantity has magnitude and direction.
2
Q
What are Scalar quantities?
A
A scalar quantity only has a magnitude.
3
Q
Displacement
A
Vector
4
Q
Momentum
A
Vector
5
Q
Force
A
Vector
6
Q
Acceleration
A
Vector
7
Q
Velocity
A
Vector
8
Q
Weight
A
Vector
9
Q
Mass
A
Scalar
10
Q
Distance
A
Scalar
11
Q
Speed
A
Scalar
12
Q
Temperature
A
Scalar
13
Q
Pressure
A
Scalar
14
Q
Work done
A
Scalar
15
Q
Power
A
Scalar
16
Q
Compression
A
Contact force
17
Q
Tension
A
Contact force
18
Q
Thrust
A
Contact force
19
Q
Friction
A
Contact force
20
Q
Air resistance
A
Contact force
21
Q
Water resistance
A
Contact force
22
Q
Drag
A
Contact force
23
Q
Lift
A
Contact force
24
Q
Upthrust
A
Contact force
25
Weight
Non-contact force
26
Magnetic force
Non-contact force
27
Electrostatic force
Non-contact force
28
Nuclear
Non-contact force
29
Equilibrium definition
An object at rest is in equilibrium.
30
Key conditions for an object to be in equilibrium
- The resultant force on the object is zero (all forces are the same).
- The forces acting on the object have no overall turning effect.
31
Centre of mass definition
The point at which the whole mass of an object is concentrated.
32
Describe the experiment to find the centre of mass of simple shapes
Hang a plumbline and the shape on a clamp. Allow the plumbline to naturally hang downwards. Once the plumbline has stopped moving, accurately draw a line following it. Do this multiple times on different points of the shape. Wherever all the lines meet is the centre of mass.
33
What is resultant force
The single sum of all the forces
