Question #75f44
1 Answer
Momentum, according to Newton's idea, is Q=m*v. It means that mass is important, but not just mass, also speed. Initially mass is important, but in "high" speed, speed is important.
Explanation:
If both the truck and the Ferrari is in rest, the momentum of the truck and Ferrari is the same (Q=m*v, Q=0) (1)(2), but in case they are in movement, the Ferrari's will be higher since it can reach higher speeds.
Another example is a watermelon, it can kill a person if falling from a tall building, but it is "useless" for that purpose in low speeds. Another example are bullets, it can "throw away" a human body in the impact.
The answer is simple, it depends on the speed of the truck and Ferrari , mass is important, but not just mass.
Example:
Consider a reference value:
Then, for the truck:
For the Ferrari,
Of course it is just mathematical trick, try it with real values!
Graph showing the momentum of the truck and Ferrari as a function of velocity Attention on this graph, it is representative, when the red line becomes constant, it should "stop", bearing in mind our truck cannot exceed 80 km/h.