00:01
Hi, in this question we have a fielder tossing a baseball with mass m given as 0 .15 kg and this baseball is moving with velocity v given as 32 meter per second at an angle theta equals to 30 degree to the horizontal.
00:21
So now in part one we have to calculate the ball's kinetic energy at the start of its motion.
00:29
So, kinetic energy is equals to half mv square.
00:37
So we can calculate kinetic energy at start of the motion equals to half into 0 .15, which is the mass, into 32 square, which gives the value for kinetic energy equals to 76 .8 jules.
01:00
So this much kinetic energy was there at the start of the motion.
01:06
Now, moving on to the second part in which we have to calculate the kinetic energy at the highest point of its arc.
01:15
So at highest point, first of all, we'll calculate the velocity...