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3 years ago

A 50 kg ball traveling at 20 m/s would have

Mathematics

2 answers:

kolbaska11 [484]3 years ago

8 0

A : 10000 J

B: 625 J

C: 2500 J

Step-by-step explanation:

Step 1:

We know that ,

Kinetic Energy is given by ((1/2) × m × V²) J

where m = Mass of substance

V = Velocity

Step 2:

In first case, m= 50 kg, V=20 m/s

Kinetic energy = 0.5 × 50 × 20 ×20

= 10000 J

In second case, m= 50 kg, V=20 m/s

Kinetic energy = 0.5 × 50 × 5 ×5

= 625 J

In Third case, m= 50 kg, V=10 m/s

Kinetic energy = 0.5 × 50 × 10 ×10

= 2500 J

kati45 [8]3 years ago

5 0

Answer:

1)4 times more

2) 4 times less

3)The same

Step-by-step explanation:

I just know cause I'm smart plus I forget what I did in my head

The person below me is wrong by the way unless they want the actual answer to the problem

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dlinn [17]

The answer would be 12cm

4 0

3 years ago

Read 2 more answers

How do solve 4v-13-10v=12-24v+5

yaroslaw [1]

You get all the v's on one side by adding 24v to both sides
4v-13-10v = 12-24v +5
+24v +24v
And then you would get
4v-13-10v+24v = 12+5
Then combine like terms
18v-13=17
Then you would get v alone by adding 13 to both sides
18v-13= 17
+13 +13
That would give you
18v=30
Then divide both sides by 18 to get your final answer
18v = 30
/18 /18
Your final answer is...
V=1.66

7 0

3 years ago

Read 2 more answers

Jeremy is writing down a sequence of integers. He writes 1 as his first number. Then, he

Pachacha [2.7K]

Answer:

4 is the unit's digit of the 20th number.

Step-by-step explanation:

Let us try to find out a pattern for the unit's digit of the terms.

1st term is 1, so unit's digit of 1st term is 1.

2nd term $1^{2} + 3 = 4$ so unit's digit is 4.

3rd term $4^{2} + 3 = 19$ so unit's digit is 9.

4th term $19^{2} + 3 = 364$ so unit's digit is 4.

5th term's unit digit: Square of unit's digit of 4th term + 3

$4^{2} + 3 = 19$ i.e. 9.

We can see that the pattern is

3rd, 5th, 7th ...... terms have 9 as the unit's digit.

2nd, 4th, 6th.... terms have 4 as the unit's digit.

So, 20th term will have 4 as the unit's digit.

4 0

3 years ago

Write the equation of the line that passes through the two points: (-4, 11) and (2,-4)

snow_tiger [21]

Answer:

y= - $\frac{5}{2}$ x+1

Step-by-step explanation:

Utilize the formula of $\frac{y2-y1}{x2-x1}$ to find the distance between two points, or in this case, the equation of the line that passes through two points.

Applying the given points to identify the slope

1. Plug the coordinates into the y and x values. $\frac{-4-11}{2+4}$ =- $\frac{15}{6}$ .

1.5. Simplify; divide both the numerator and the denominator by 3. - $\frac{5}{2}$ .

Applying slope and a point to find the y-intercept of the equation of a line

1. Utilize the formula of y=mx. Though this sounds strange, morph the sign of equality into subtraction.

1.5. Result: y-mx

2. Do this for both points.

First point: (-4,11)

y-mx

11 + $\frac{5}{2}$ (-4)

11 + -10 (11-10)

Plug the result and the slope into y=mx+b to find the slope of the line.

Result: y=- $\frac{5}{2}$ x+1.

Check your answer to confirm that the value of y is true for both points

1. Do the same thing you did with the first point, but use the second point this time.

y-mx

-4 + $\frac{5}{2}$ (2)

-4 + 5

Plug the result and the slope into y=mx+b to find the slope of the line.

Result: y=- $\frac{5}{2}$ x+1. Identical to point one's result.

In conclusion, both of the results are the same. Therefore, the equation of the line must be y=- $\frac{5}{2}$ x+1.

3 0

4 years ago

I really need help with this

Marrrta [24]

Answer:

G=21, F=9, M=6, L=7, E=20, D=15, B=10, R=12.5, T=16, N=13.5, W=18, H=36, Z=12

*I=5*

Step-by-step explanation:

I basically just found the scale factor/proportion from two given sides and then used that to find the remaining sides.

*I'm not sure about 'I' since the edge of the paper was cut off so I want sure if it was a 5 or a 15 on the left most problem in the third row. I assumed it was 15. If it's not, just shout it out in the comments and I'll fix it! :)*

You can fill the letters in at the bottom XD

I hope this helped! :D

7 0

3 years ago