00:01
Hi, in this question it is given that the mass of the glider a is 0 .5 kg, mass of the glider b is 0 .3 kg.
00:09
And both are moving the same velocity of 2 meters per second.
00:14
After the puddison, the glider b moves in the positive direction with a x component of 2 meters per second.
00:24
We need to determine the velocity of the glider a, that is b .a we need to determine.
00:29
And also we need to determine the va dash, that is the velocity of the glider a after the collision, when the glider a is addressed and the glider b moves with a velocity of 4 .9 meters per second, and after the collision, the glider b moves with a velocity of 0 .78 meters per second.
00:50
Let us go into the pot a.
00:52
In the pot a, we need to find the velocity of the glider a.
00:58
To find that, let us apply the law of conservation of momentum.
01:04
According to the law of conservation of momentum, the mass of the glider a multiply with the velocity plus the mass of the glider b multiply with the velocity.
01:19
This velocity must be in the negative direction.
01:23
Therefore, we'll put minus sign here.
01:27
Because it is moving in the opposite direction must be equal to the mass of the glider a the velocity of the glider a after the collision plus the mass of the glider b multiply with the velocity of the glider b after collision...