i think more accurately, you have to provide more details:
1. Is the collision perfectly inelastic or elastic?
2. Is there any friction between the cars and the floor?
3. Are there any other form of energy losses from the collision, say to sound or whatsoever?
haha.
i think more accurately, you have to provide more details:
1. Is the collision perfectly inelastic or elastic?
2. Is there any friction between the cars and the floor?
3. Are there any other form of energy losses from the collision, say to sound or whatsoever?
haha.
I always thought in collision problems the conservation of momentum is used to calculate the resultant velocity of the colliding bodies.
Dudes, it's not that simple right?
Imagine this: initially car B has velocity 100km/h. Car A is 0km/h. We know if collision is inelastic, both cars will finally move together with a common velocity.
So, how did car B decelerate to that final velocity? And how did car A accelerate to that final velocity? During collision when Car B is decelerating and Car A is accelerating, there will be discrepancy between the velocities of the cars, so can the cars still move as one, ie perfectly inelastic?
So the question is, during the time Car A takes to cover the 10cm gap, to what velocity has it accelerated to?
yes yes yes... that's my question.. in short i just wanna know the 'speed' of the car that'll hit john
yes yes yes... that's my question.. in short i just wanna know the 'speed' of the car that'll hit john
The question is really lacking in information and the simplest answer is that Car A will also hit John at 100km/h. :dunno:
Assuming no frictional force, no lost of energy on impact, *Insert your own assumptions.
The question is really lacking in information and the simplest answer is that Car A will also hit John at 100km/h. :dunno:
Assuming no frictional force, no lost of energy on impact, *Insert your own assumptions.
say Car A is stationary. Car B crashes car A at a speed of 100km/h..
john is standing 10cm infront of car A
both car weights 1 ton.
what is the speed equivalent of car A impact on john
ok car A does not have handbrake on in case someone will ask....
both car weights 1 ton.