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Please answer all the questions

Independent variable:  Bumper size, vehicle speed

Dependent variables: Damage size, bumper damage

the hypothesis.:  If the bumper size increases the damage to the vehicle should decrease

Explanation:

This problem asks to specify the variables in a scientific investigation

* Independent variable

 These are the variables that the researcher can control

   Bumper size, vehicle speed

* Dependent variables

are the measured variables

   Damage size, bumper damage

* Control variable

are the measures to minimize the effects on the variables

    Vehicle speed, which is the same in the control and experimentation vehicles

damage medicine without bumpers

    Material of the bumpers so that this has no effect on the measurements

the hypothesis.

If the bumper size increases the damage to the vehicle should decrease

1 a

2 b

3 b

4 d

5 d

6 d

explanation: