When the pitcher throws the ball it will travel 10 meters per second how long will it take for the ball to reach the hitter? part 2

the hitter hits the ball back to the pitcher, the pitcher catches it it takes one second for the ball to reach the pitcher how fast was the ball traveling?

travel speed is = 10 m/sec

so for 20 meter = 20/10 = 2 sec

Step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.