Recent content by PhysicStud01

so, if the magnitude of momentum of the fast vehicle increases, there should be a similar change in momentum of the other vehicle? also, can the vehicles continue in their original direction or the only possibility is that they bounce off?

should the change in momentum should be the same for both vehicles?

but for B, we are assuming a total elastic collision. what if it is inelastic? by the way, can we explain in terms of kinetic energy - it remains the same (in elastic), decreases (in inelastic) but it cannot increase ??

could you tell me please the conditions that would make each option possible? example, in my opinion, A is only possible when the momentum of both are equal. B: ? C: if the fast moving one has a smaller mass and mass of slow one is much larger ..?? D: ? thanks

i meant that it cannot be elastic. so, the explanation provided for C being possible above would not hold. if C is incorrect, would you explain which one is correct and why?

this is what the mark scheme says and even the exam report gives the same answer. i assume that if it was wrong, the exam report would correct it. also, can we assume elastic collision for the collision between vehicles?

Attempt: I know that the conservation of momentum and energy also applies. Solution: Correct answer is C. But I can't understand how any of the two conservation laws lead to the answer C. The exam report to this question did not even mention anything about this - so, I guess it should be...

then can we say that the field lines are from high potential to low potential instead of from +ve to -ve?

so, even if it's zero potential, it's possible to have +ve charges? shouldn't the plate with +ve charges be at a higher potential

Shouldn't the plate that is earthed be with no charge? making B correct. but the accepted answer was A.

ok, thanks

so, it could be straight lines too? as long as it starts from zero, reach a maximum, then decreases to zero again?

thanks, I had already understood this one. but during the contact, why does the force behave this way?

the ball has an initial velocity down. this is reduced to zero, then increase upwards. but does the force change this way? is it not constant? and why with this gradient?

why is the shape of the force extension graph this way? area gives change in momentum. but the gradient does not represent any physical quantity? why does the force increase at a decreasing rate, then decrease at an increasing rate?