00:01
In this question, it has been asked that in which scenarios we can properly analyze or use the conservation of momentum theory.
00:13
Taking the first case, it is given that predicting the motion in a free fall.
00:30
Now we know that in a free fall, the main governing equations are the equations of laws of motion, that is, y equals to ut plus half a t square.
00:43
V equals v plus 80, so and so.
00:47
So, first option is not correct.
00:52
Now coming to the point b, predicting the amount of heat generated by friction as an object slides along the track.
01:02
Now here comes the friction case and the heat generation.
01:09
In these cases we know that generally we do not apply the conservation of momentum.
01:15
So this is also incorrect...