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dimaraw [331]
4 years ago
8

a young hockey player on frictionless ice shoots a 1 kg hockey puck 150 m/s toward the goal. of the hockey player slides backwar

d at 3m/sec what is his mass?
Mathematics
1 answer:
Dafna11 [192]4 years ago
5 0
By conservation of linear amount of movement we have:
 m1v1i + m2v2i = m1v1f + m2v2f
 Where,
 v1i = v2i = 0 (assuming initial rest)
 m1v1f + m2v2f = 0
 Substituting the values:
 m1 (-3) + (1) (150) = 0
 Clearing m1:
 m1 = (- (1) * (150)) / (- 3)
 m1 = 50 Kg
 answer:
 his mass is 50 Kg
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Add. Simplify the answer and write it as a mixed number. 1/2+2/3+1/6
lyudmila [28]

Answer:

1 1/3

Step-by-step explanation:

Find the common denominator of all three which is 6.

Then multiply each to make the common denominator 6

1/2*3 = 3/6

2/3*2 = 4/6

1/6*1 = 1/6

Then add all of them together

3/6+4/6+1/6 = 1 2/6

Simplified equals 1 1/3

5 0
3 years ago
Hey I’m struggling with number 13 so please show your work. Thx
Dafna11 [192]

Answer:

\frac{5}{12}

Step-by-step explanation:

Because \frac{3}{5} is being multiplied by S, we can divide \frac{3}{5} from both sides of the equation. This will give us:

\frac{1}{4}÷\frac{3}{5}

But, that looks a bit hectic. Instead of dividing, you can multiply by the reciprocal (which is essentially how to divide fractions). So, instead of \frac{1}{4}÷\frac{3}{5}, you get:

\frac{1}{4}×\frac{5}{3}

When multiplying fractions, remember you can just multiply straight across-- numerator x numerator, then denominator x denominator.

By doing that, you get the fraction \frac{5}{12}

\frac{5}{12} cannot be simplified any more, so S=\frac{5}{12} is your answer :)

I hope this helps

6 0
3 years ago
HELP PLSSS THIS IS HARD SOMEONE
mariarad [96]

Answer:

The 4th option

Step-by-step explanation:

Mark me as brainliest please

5 0
3 years ago
The volume of a cylinder is 4,019.2 cubic units. If the radius is 8 units, how tall is the cylinder?
AVprozaik [17]
We will be using the formula in looking for the volume of the cylinder which is

V = πr²h

where:

r = radius
h = height
V = volume

but in the problem V and r have values already:
r = 8
V = 4019.2

plug this in the volume equation:

V = πr²h
= 4019.2 = π* 8² * h
= 4019.2 = 64πh
= 4019.2 / 64π = h

so the answer is: h = 4019.2 /201.06193
= 19.99 is the height of the cylinder.


8 0
4 years ago
Y=8x-4 find y and x intercept
dlinn [17]

Answer:

<h3>The x intercept is 1/2</h3><h3>The y intercept is - 4</h3>

Step-by-step explanation:

y = 8x - 4

First to find the y intercept let x = 0

Substitute the value of x into the equation

That's

y = 8(0) - 4

y = - 4

<h3>The y intercept is - 4</h3>

To find the x intercept let y = 0

Substitute the value of y into the equation

that's

8x - 4 = 0

8x = 4

Divide both sides by 8

x = 1/2

<h3>The x intercept is 1/2</h3>

Hope this helps you

5 0
3 years ago
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