Assessment started: undefined. Item 1
When two objects collide, the momentum of the system remains constant.

What is this is a statement of?

Newton's third law

a change in momentum

the conservation of momentum

impulse

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Could someone . i have tried to solve myself but my calculation is off

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?