Answer: 146.12 m/s (to the right)
Step-by-step explanation:
The Conservation of Linear Momentum principle states that the initial momentum (before the elastic collision) must be equal to the final momentum (after the elastic collision):
(1)
Being:
Where:
is the mass of the racket
is the velocity of the racket before the collision
is the mass of the ball
is the velocity of the ball before the collision
is the velocity of the racket after the collision (assuming it is at rest after hitting the ball)
is the velocity of the ball the collision
So, we have the following:
(2)
Finding :
(3)
(4)
Finally:
This is the velocity of the ball after the collision
Plug the value of x into the equation
324
Because you multiply 9 by 36
Answer:
3
Step-by-step explanation:
6x - 2w + 9 - 8 = 6x - 2w +1
= 6*2 - 2*5 + 1
= 12 - 10 +1
= 2 + 1 =3