00:01
Hello friends, in the question we are given that we have a baseball and mass of this baseball is 0 .11 kilogram.
00:09
Initially, this baseball was moving with a speed of 20 meter per second and it was struck by a bat.
00:19
So let us assume that this is the bat and initially this baseball was moving in this direction with a speed of 20 meter per second.
00:30
After strucking with the bat the baseball moves in opposite direction and we have also given that the impulse given by magnitude of impulse given by bat to the ball is 5 .4 kilogram meter per second so we have to find what is the final velocity of this ball after it is struck by the bat here we will use the term or the concept that the impulse is equal to the impulse imparted to object is equal to change in momentum of that object.
01:15
So here the change in momentum will be final momentum of that ball and minus initial momentum of that ball.
01:25
But we have given the magnitude of the impulse.
01:28
So this will also be the.
01:30
Magnitude of change in momentum.
01:33
So we will first determine what are the initial and final momentums of the ball.
01:40
So for initial momentum, the expression will be mass into initial velocity.
01:46
So mass is m and initial velocity is 20 meter per second.
01:52
It is in positive x direction.
01:54
So we will take it as positive...