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3 years ago

Is a roller coaster moving downhill is a potential or kinetic energy?

1 answer:

8 0

Hey there I see you need help well I am here to do just that, so your answer would be kinetic energy because potential energy is when her is sitting on the top of the hill so the correct answer is :Kinetic Energy

Hope this helps if so why not hit that brainllest answer button ;)

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How far does a wave travel in three cycles?

eduard

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4 years ago

Plants make energy. Some of it they use to preform the necessary functions of living. What do they do with the excess energy?

Maksim231197 [3]

Answer:

They can use it for when they are dormant in the winter or to grow more sources for storing and creating energy, or they store the energy (this energy would be considered stored energy).

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3 years ago

What is the difference between fertilization and pollination

lana [24]

Pollination is when the male gamete or pollen reaches the female flower through different modes...wind,air,animals,...
Fertilization is when the male gamete "join" with the female gamete to become an embryo.
I hope I helped.:)

4 0

3 years ago

Which of the following is NOT true about a pool of water and a piece of ice? A They have the same composition. B They are in dif

anastassius [24]

C. They have different chemical properties.

7 0

3 years ago

Read 2 more answers

HELP!!! 30 POINTS+BRAINLIEST!!!!!QUICK!!

tia_tia [17]

Answer:

A:7.2 $ms^{-1}$

B:14.25 $ms^{-1}$

C:1.45 $sec$

D:10.3 $m$

E:2.9 $sec$

F:20.88 $m$

Explanation:

Let $v$ be the velocity and $\alpha$ be the angle between the velocity and ground.

Question A:

Horizontal component of velocity is given by $vcos(\alpha )$ .

So,horizontal component is $16\times cos(63)=16\times 0.45=7.2ms^{-1}$

Question B:

Vertical component of velocity is given by $vsin(\alpha )$ .

So,vertical component is $16\times sin(63)=16\times 0.89=14.25ms^{-1}$

Question C:

Time required is given by $\frac{\text{vertical component of velocity}}{g}}=\frac{14.25}{9.8}=1.45 seconds$

Question D:

Maximum height is given by $\frac{\text{vertical component of velocity}^{2}}{2g}}=\frac{203.06}{19.6}=10.3m$

Question E:

Time of flight is twice the time required to reach maximum height= $2\times 1.45=2.9 seconds$ .

Question F:

The distance between the player and ball after landing is called range and is given by $\text{horizontal component of velocity}\times \text{time of flight}=$ $7.2\times 2.9=20.88m$

8 0

3 years ago