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hjlf
2 years ago
8

A pitcher throws a 9 kg baseball in a straight line. Its momentum is 2.1 kg-m/s. What is the velocity of the

Mathematics
1 answer:
Zina [86]2 years ago
3 0

Answer:

0.23\:\mathrm{m/s}

Step-by-step explanation:

The momentum of an object is given by p=mv, where m is the mass of the object and v is the velocity of the object.

What we're given:

  • object's mass m
  • object's momentum p

Substituting given values, we can solve for v:

2.1=9v,\\v=\frac{2.1}{9}\approx \boxed{0.23\:\mathrm{m/s}}

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I need help plz help me
denis-greek [22]

Answer: 2538

Step-by-step explanation:

12*21/2

126

126/1*41/2

2538

4 0
3 years ago
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Wow, using grammar makes me feel like an adult!
Ymorist [56]

Answer:

I asked my teacher if we could use that she said it's considered cheating, I still use it

Step-by-step explanation:

6 0
3 years ago
A rectangular prism is 24mm in height 13mm width and 29mm in lenght what is the surface area?
aev [14]
The surface area of a rectangular prism is:

A=2(LW+HW+LH)  in this case:

A=2(24*13+24*29+13*29)

A=2(1385)

A=2770 mm^2
6 0
2 years ago
F(x) = 2x2 - 4x?; Find (-4)
anastassius [24]

Answer:

0 (zero)

Step-by-step explanation:

Plug in the variable for -4 and solve

y= 2(-4)2-4(-4)

y= -8(2)-4(-4)

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4 0
3 years ago
Look at the graph shown<br> Which equation best represents the line?
Brilliant_brown [7]

y=\frac{11}{4}x +4 is the equation best represents the line.

Solution:

Take any two points on the line.

Let the points be (0, –4) and (4, 7).

x_1=0,y_1=-4,x_2=4, y_2=7

General form of equation of a line is y = mx + c

where m is the slope and c is the y-intercept of the line.

<em>y-intercept is the point which line crosses at y-axis.</em>

In the given line, y-intercept is 4.

c = 4

Slope of the line:

$m=\frac{y_2-y_1}{x_2-x_1}

$m=\frac{7-(-4)}{4-0}

$m=\frac{11}{4}

Equation of the line:

y = mx + c

y=\frac{11}{4}x +4

Hence y=\frac{11}{4}x +4 is the equation best represents the line.

5 0
3 years ago
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