Question

A 10.0-kg animal is running at a rate of 3.0 m/s. What is the kinetic energy of the animal?

Hint: 1/2 (M)(V)2
• 3.3 J
• 45.0 J

Answer 1

its simple math you can calculate it by your own
it's 2nd

Answer 2

1/2 (M)(V)2
1/2 (10)(3)2
(5)(3)(2)
(15)(2)
(30)

Answer 3

I get 30 everytime..

Answer 4

That was kinda rude i was hope- ing- for someone to run through it with me and help me understand what i did not understand in...

Answer 5

Thanks green

Answer 6

Lol, I don't know how he got 45 though..

Answer 7

If you switch M and V around you get the same answer of 30.

Answer 8

Ok

Answer 9

Basically 'times 1/2' and 'times 2' cross each other out.

Answer 10

hey it's\[v^2\]

Answer 11

Oh, the equation she gave didn't provide that.

Answer 12

1/2(m)(v)^2
1/2(10)(3)^2
1/2(10)(9)
(5)(9)
45

Answer 13

Ah, I see.

Answer 14

\[KE=\frac{ 1 }{ 2 } m v^2\]

Answer 15

Which kind of energy transformation occurs when the skateboard falls downward, thus, striking the ground? (1 point)
• kinetic to potential to electrical
• gravitational to kinetic to thermal
• mechanical to potential to gravitational



(check my answer) My answer: C

Answer 16

B

Answer 17

.-.

Answer 18

Explanation, @gyanu ?

Answer 19

Which kind of energy does the soccer player transfer to the ball?

• kinetic
• potential
• sound


I know its not sound because that has nothing to do with sound waves, I think kinetic because he hitting on it adding force for it to move ? and kinetic is like movement...

Answer 20

It can also be Potential though... because it might be still in the sky about to fall D:

Answer 21

potential energy is =mgh
when height decreases of skateboard its potential energy decreases
due to energy conservation it;s convert to kinetic energy because velocity increases as heigt of skateboard decreases
now at the ground their is friction which convert energy into heat which is thermal energy.

Answer 22

:O !!!

Answer 23

This guy knows his science..

Answer 24

xD

Answer 25

@BellaNina865
i think it;s all three
because when player kick ball get velocity due to which their is kinetic energy
it got height due to which their is potential energy
and their is sound also which is also a form of energy.

Answer 26

It wont let me put all..

Answer 27

It's probably which one contributes more to the transfer of energy..

Answer 28

Which type of energy is represented here?
(1 point)
• thermal
• chemical potential
• electromagnetic

im guessing ... thermal .-.

Answer 29

or electromagnetic '.'

Answer 30

actually soccer player has purely kinetic energy so he transfer kinetic energy to ball all other effect takes place after transfer so KE is best option

Answer 31

because of the motion '.' :O

Answer 32

it's chemical when you rub matchstick with match their is chemical reaction which convert chemical energy to thermal

Answer 33

yes because soccer player is running

Answer 34

Some kayakers coat the bottom of their kayaks with wax to make them more slippery.

Kayakers wax their boats to
• reduce the work output.
• reduce their input force.
• reduce the speed the boat travels in water.