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//Example 6_9
clc();
clear;
//To find out the velocity of second ball after collision
v1=5 //units in meters/sec
theta=50 //units in degrees
v2=2 //units in meters/sec
vx=v1/(v2*cos(theta*%pi/180)) //units in meters/sec
vy=-(v2*cos(theta*%pi/180)) //units in meters/sec
v=sqrt(vx^2+vy^2) //units in meters/sec
printf("After the collision the second ball moves at a speed of v=%.2f Meters/sec",v)
//in textbook the answer is printed wrong as 4.01 meters/sec the correct answer is 4.1 meters/sec
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