So basically you are saying that momentum cannot be conserved in such cases. Just to be sure.. one last example on the same idea.. Having two kids riding the same bike and one of them jumps of landing with zero velocity does not imply that the velocity of the bike will increase. According to...
I don't know whether you are understanding me. On the same principle, imagine 2 objects moving together as in the case of a person on a horse moving at 10 m/s. If the horse suddenly stops with zero velocity, the person will keep moving forward with a greater speed compared with the speed he...
Pardon me but how can it be that none of us is right. The speed of an object immediately after being thrown can either increase, decrease or remain the same. I don't see any other option. We are assuming no external forces are acting and using the law of conservation of momentum.
Homework Statement
Does the speed of a ball increase, decrease or remain the same once it leaves the hand as it being thrown horizontally?
Homework Equations
Law of conservation of momentum[/B]
The Attempt at a Solution
According to my calculations, it increases as momentum is transferred...
Each half will have half the weight, so half the force and half the area and so the pressure is equal to that of the whole block. So I think I am right to say that by splitting it up vertically even though they might lie side by side touching each other, the overall pressure on the ground still...
Homework Statement
A block exerts a pressure on the ground. If the block is split vertically into two halves does the total pressure on the ground increase, decrease or remain the same?
Homework Equations
Pressure = Force/Area
The Attempt at a Solution
I think that it doubles but I am not...
Homework Statement
I was taught that a crest is the section of the wave above rest position.
Homework EquationsThe Attempt at a Solution
Now that I am studying Physics at higher level I am getting mixed up as sometimes I encounter situations where a crest is the whole part/section of the...
A beta particle consists of a fast moving electron emitted from the nucleus of an atom. Beta particles can pass through the palm of a human hand.
My question is .. Being a particle how can it pass through the palm of a hand? I still haven't done quantum Physics but I suspect that it has...
Our Physics teacher used to tell us that in an ac circuit the current and hence the flow of electrons is reversed every half cycle as the polarity of the supply changes every half cycle. However I am still puzzled about the following. In the UK, the live is the wire that delivers electrical...