The discussion revolves around a momentum conservation problem involving a collision between a car and a van, where the car has a mass of 15000 kg and an initial velocity of 40 m/s, while the van has a mass of 30000 kg and an initial velocity of 30 m/s. The car reportedly bounces back at 3 m/s after the collision, leading to questions about the resulting velocity of the van.
The discussion is ongoing, with participants exploring different interpretations of the problem statement. Some guidance has been offered regarding the interpretation of the car's velocity after the collision, but no consensus has been reached on the specifics of the scenario.
There is a concern about the realism of the data provided in the problem, and participants are encouraged to clarify the wording of the problem as it was presented to them.
If I understand you correctly, the problem statement tells you that the car bounces back at 3 m/s (and thus its velocity is -3 m/s). Use that fact to calculate the speed of the van after the collision.kompheak vic said:i really doubt if the velocity of car is -3m/s
It's certainly not realistic data. Perhaps you are misinterpreting what was meant:kompheak vic said:but i still don't know why the car hit the van in the speed of 1 direction and the result the car bounce back 3m/s it not logic
Perhaps that means the speed of the car was reduced by 3 m/s. That would be much more realistic.kompheak vic said:...after collision the car go back 3m/s