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4 years ago

11

99 POINTS!!

2 answers:

olganol [36]4 years ago

7 0

Ball B, with a mass of 30kg, is moving to the left at -10 m/s. With what velocity should Ball A, with a mass of 10 kg, move to the right and collide with B, so that Ball A rebounds with a velocity of -30 m/s, and Ball B with velocity of 10 m/s, after the collision? Assume the collision to be perfectly elastic.

Use the formula for perfect elasticity. m1v1(initial) + m2v2(initial) = m1v1(final) + m2v2(final) m1 = mass of object 1, m2 = mass of object 2 v1 = velocity of object 1, v2 = velocity of object 2

Answer: -30 in velocity

Jlenok [28]4 years ago

3 0

The solution is -30 velocity

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3 years ago

135 + 230+100+100+1000

PIT_PIT [208]

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Step-by-step explanation:

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3 years ago

Genie is making cookies and brownies. Each cookie uses 8 grams of flour and each brownie uses 12 grams of flour. She wants to ma

Nikolay [14]

The system of inequalities models correctly the number of cookies is c + b ≥ 125 and 8c + 12b ≤ 2000

Let c represent the number of cookies and let b represent the number of brownies.

Since Genie want to make more than 125 cookies and brownies altogether, hence this is given by:

c + b ≥ 125 (1)

Also, Genie has a total of 2,000 grams of flour, hence:

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Therefore the system of inequalities models correctly the number of cookies is c + b ≥ 125 and 8c + 12b ≤ 2000

Find out more at: brainly.com/question/15137133?referrer=searchResults

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3 years ago

Solve the inequality and express your answer in interval notation.<br> x^2- 8x+3<0

Papessa [141]

<u><em>Solution:</em></u>

A. $(-4-\sqrt{13},-4+\sqrt{13})$

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2 years ago

Find 3 points that solve the equation -x + 2y= 2

Igoryamba

Answer:

(0,1)

(-2,0)

(2,2)

Step-by-step explanation:

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3 years ago