8th grade Science! provide evidence that the change in an object's motion depends on the sum of
the forces on the object and the mass of the object

Can someone please help?:( I’m supposed to do force analysis

answer: electrons

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular