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3 years ago

Do you think a moving skateboard has energy? Why or Why not? What about a skateboard that is not moving?

2 answers:

4 0

Yes,

because it is moving which generates energy. ... Does a moving skateboard have energy? To move the energy, you had to transfer the potential energy to kinetic energy. This generates heat, light, or sound.

puteri [66]3 years ago

3 0

Answer:

Yes

Explanation:

Because if you push it, the skateboard has kinetic/potential energy.

You might be interested in

Some metals have a molecular structure that makes them good conductors. Explain how understanding this relationship can help eng

erastova [34]

Answer:

Explained below.

Explanation:

Conductors can be defined as materials that permit electricity to flow through them easily.

Now, metals have a molecular structure that makes them good conductors because electrons in the atoms of these conductors tend to move freely from one atom to the other. So a majority of metals make good conductors because these metals tend to hold their electrons loosely. In short, it can help engineers make powerful batteries because then it means that they are capable of giving much more electrical energy since nowadays, advanced batteries make use of ion charges for the batteries.

7 0

2 years ago

Help please!

weeeeeb [17]

Answer:

m=1000kg

v=72km/h=20m/s

Work = different of kinetic energy

W= ½ mv ²

W= ½ ×1000×20×20= 400000J

also written as 4×10^5 J

thank you

5 0

2 years ago

Reeti has a mass of 51.0 kg. The Gravitron, a ride that spins so fast that the floor can be removed without the riders falling,

Serggg [28]

Answer:

L = 2774.4 $kgm^{2}/s$

Explanation:

Using the formula

L = mvr

Where L is angular momentum

m is mass

v is velocity

r is radius

m= 51kg , v=17m/s , r=3.2m

L = 51×17×3.2

L = 2774.4 $kgm^{2}/s$

7 0

3 years ago

How did you figure that out? (think of FORMULA!)

Minchanka [31]

Answer:

the most potential energy would be at the highest point and the least it's at the lowest point so let's say and rollercoaster when it's like moving up its gaining potential energy while it's going down it loses potential energy (sorry if u get it wrong)

5 0

3 years ago

What is the kinetic energy of a 1700 kg car traveling at a speed of 30 m/s (â65 mph)? does your answer to part b depend on the c

MArishka [77]

The kinetic energy of an object is given by
$K= \frac{1}{2} mv^2$
where m is the mass of the object and v its velocity.

For the car in the problem, $m=1700 kg$ and $v=30 m/s$ , so the kinetic energy of the car is
$K= \frac{1}{2}mv^2= \frac{1}{2}(1700 kg)(30 m/s)^2=7.65\cdot 10^5 J$

and as we can see, yes, the answer depends on the car's mass.

6 0

3 years ago