00:01
In this problem, we have been given that there are two balls, and these two balls have masses 50 kg and 30 kgs respectively.
00:11
So let's take the mass of the first ball as m1 and the mass of the second ball as m2.
00:18
And these balls are having velocities 50 meter per second and 30 meter per second.
00:24
So u1 is the initial velocity of the first ball, that's 50 meter per second, and u2.
00:30
That's the initial velocity of the second ball and that's given as 30 meter per second.
00:37
And these balls collide head on elastically and we are required to compute their velocities right after collision.
00:45
So let's say we one is the final velocity of the first ball and v2 is the final velocity of the second ball.
00:51
And as these balls collide, there is no external force which is applied to the system of these two balls.
00:57
So momentum here will be conserved.
01:00
So using this equation, we will compute momentum according to which momentum is the product of mass and velocity.
01:09
So from the conservation of momentum, total initial momentum, which is the initial momentum of the two balls added together, this will be equal to the total final momentum, which is mass into final velocities of each balls added together.
01:26
And let's simplify this equation...