Answer:
Ehhh
Step-by-step explanation:
Answer:
10x10= 100
Step-by-step explanation:
thx for the points
hope you have a wonderful dayyy
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.
Step-by-step explanation:
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Answer:
I get 17.
Step-by-step explanation:
Reduce the fraction:
3 ( 3 + 4 ) - 4
Add the numbers:
3 x 7 - 4
Multiply the numbers:
21 - 4
Subtract the numbers:
17