Physics question, help needed pleases?

I would say momentum because as an object gains speed it has more force so more power. Just like a car in an accident. The accident is always worse when speed is involved. When I think of driving force I think of wind.....say like in a hurricane. The driving force of the wind forced the ocean to rise 20 ft. Hope this helps u.
 
B) Momentum

Look at the equation [p=mv], in which [p=momentum], [m=mass], and [v=velocity].

Example: A mass of 2 kg is moving at 5m/s.
p=mv
p=(2kg)*(5m/s) = 10 kgm/s

Now double the velocity. A mass of 2 kg is moving at 10m/s.
p=mv
p=(2kg)*(10m/s) = 20 kgm/s

The momentum doubles as well.
 
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