Answer:
314
Step-by-step explanation:
First, find the diameter which is 10 and square it. Then, multiply by pi or 3.14 to get 314.
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Answer:
The constant force exerted on the ball by the wall is 119.68 N.
Step-by-step explanation:
Consider the provided information.
It is given that the mass of the ball is m = 2.2 kg
The initial velocity of the ball towards left is 7.4 m/s
So the momentum of the ball when it strikes is = 
The final velocity of the ball is -6.2 m/s
So the momentum of the ball when it strikes back is = 
Thus change in moment is: 
The duration of force exerted on the ball t = 0.25 s
Therefore, the constant force exerted on the ball by the wall is:

Hence, the constant force exerted on the ball by the wall is 119.68 N.
Answer:just do the math mate
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
2x-10=12
2x=12+10
2x=22
x=11