A) experiment. Is the answer.
hypothesis is the educated guess about what the result of the experiment is before conducting the experiment.
Observation is what you see and record during the experiment.
you could make a self propelled car all you need is cardboard, wheels, and a balloons or rubber bands
Answer:

Explanation:
First of all, let's convert from nanometres to metres, keeping in mind that

So we have:

Now we can convert from metres to centimetres, keeping in mind that

So, we find:

The parallel component is given by
F=180cos(25)=163.14N
Answer:
increasing; speeding up is my answer