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hoa [83]
3 years ago
8

If a toy helicopter is moving at 12 m/s, how much energy does 3kg toy have?

Mathematics
1 answer:
kakasveta [241]3 years ago
6 0

9514 1404 393

Answer:

  216 J

Step-by-step explanation:

The kinetic energy is given by ...

  KE = 1/2mv^2

  KE = (1/2)(3 kg)(12 m/s)^2 = 216 kg·m²/s² = 216 J

The kinetic energy of the toy is 216 joules.

__

Its potential energy depends on its height.

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Number 2 please help
Sveta_85 [38]

Answer:

you just have to check the first and the third box

Step-by-step explanation:

put each into slop intercept form

y+6=-5(x-2) is the same as y=-5x+4

y-2=-5(x+6) is the same as y=-5x-28

y=-5x+4

y=-5x-28

all of them have a slope of -5, but you need to plug in (2,-6) to see which on is true

5 0
3 years ago
Renaldo increased the image size on the computer screen by 20%. By
BartSMP [9]

Answer:

44%

Step-by-step explanation:

100 + 20 = 120/100

(1.2)^2=1.44

144 - 100 = 44%

3 0
3 years ago
Question 7: 10 pts
levacccp [35]

The teacher ordered the students in 24 ways.

We have given that the total number of students is 4.

4 students are assigned to give presentations.

We have to find the arrangement of the 4 students.

<h3>What is the arrangement?</h3>

An arrangement (or ordering) of a set of objects is called a permutation. (We can also arrange just part of the set of objects.)

In a permutation, the order that we arrange the objects n is important.

4 students can be arranged by 4! ways.

4!=4*3*2*1\\  =12*2\\=24

Therefore option 3 is correct.

The teacher ordered the students in 24 ways.

To learn more about the permutation visit:

brainly.com/question/12468032

#SPJ1

3 0
2 years ago
In a certain study,the chance of encountering a car crash on the road is staged as 22%. Express the indicated degree of likeliho
marissa [1.9K]
Wouldn't it be .22 probablilty value?
8 0
3 years ago
Nine less than twice the height H
PIT_PIT [208]

Answer:

2h-9

Step-by-step explanation:

Twice the height of h would be 2H and 9 less from that would be 2h-9

Hope this helps :) Plz mark brainliest <3

4 0
3 years ago
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