Reflection and forces - Physics Flashcards
1
Q
Specular reflection
A
A reflection from a smooth surface
2
Q
Diffuse scattering
A
Reflection from a rough surface
3
Q
Describe the law of reflection
A
Angle of incidence = angle of reflection
4
Q
Describe the process of refraction
A
Transparent objects can only be seen if light changes when it passes through it
5
Q
List 3 contact forces
A
Push,pull,drag
6
Q
List 2 non contact forces
A
Magnetism,gravity
7
Q
When are forces unbalanced
A
When changin speed or direction
8
Q
Describe hookes law
A
As the force doubles , the extension on a spring also doubles
9
Q
How can you increase and reduce friction forces
A
The surface
