Aresearcher is testing the effects of sunlight on depression. the dependent variable and the independent variable is

The dependent variable is the degree of depression and the independent variable is the amount of sunlight.

In experimental research, cause-effect relationships are usually analysed by testing the effect of independent variables over dependent variables. An easy way to tell one from the other is to think: independent causes a change in dependent.

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces

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