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2 years ago

Which quantity is proportional to 12⁄48?

Mathematics

2 answers:

Alecsey [184]2 years ago

8 0

Answer:

1/4

Step-by-step explanation:

Finger [1]2 years ago

4 0

Answer:

we know that

16/4-----------> 8/2---------> 4/1

case 1)

64/16--------> 32/8-----> 16/4------> 8/2------> 4/1

the quantity (64/16) is proportional to 16/4

case 2)

6/1 is not 4/1

the quantity (6/1) is not proportional to 16/4

case 3)

5/1 is not 4/1

the quantity (5/1) is not proportional to 16/4

case 4)

48*12--------> 24/6-----> 12/3------> 4/1

the quantity (48/12) is proportional to 16/4

case 5)

4/1 is equal to 4/1

the quantity (4/1) is proportional to 16/4

Step-by-step explanation:

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2 years ago

A 2.2 kg ball strikes a wall with a velocity of 7.4 m/s to the left. The ball bounces off with a velocity of 6.2 m/s to the righ

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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 = $2.2\times 7.4=16.28$

The final velocity of the ball is -6.2 m/s

So the momentum of the ball when it strikes back is = $2.2\times -6.2=-13.64$

Thus change in moment is: $16.28-(-13.64)=29.92$

The duration of force exerted on the ball t = 0.25 s

Therefore, the constant force exerted on the ball by the wall is:

$\frac{29.92}{0.25}=119.68$

Hence, the constant force exerted on the ball by the wall is 119.68 N.

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