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Cerrena [4.2K]
3 years ago
6

My car engine can generate 3000 Newtons of force and the car masses 1500 kg. How fast can the sports car accelerate?​

Physics
1 answer:
xeze [42]3 years ago
8 0

Answer:

The sports Car can accelerate at 2 m/s².

Explanation:

Force:

Force is the push or pull on an object with mass that causes it to change velocity or to accelerate.

Force represents as a vector, which means it has both magnitude and direction.

Given:

Mass of car = 1500 kg

Force           = 3000 Newtons

To Find:

Acceleration, = ?

Solution:

Formula:

Force = Mass\times Acceleration\\F= ma\\3000 = 1500\times Acceleration\\Acceleration = \frac{3000}{1500} \\Acceleration = 2\ m/s^{2}

Therefore, the sports Car can accelerate at 2 m/s².

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A bucket of water of mass 10 kg is pulled at constant velocity up to a platform 30 meters above the ground. This takes 10 minute
Rudik [331]

Answer:

W = 2352 J

Explanation:

Given that:

  • mass of the bucket, M = 10 kg
  • velocity of pulling the bucket, v = 3m.min^{-1}
  • height of the platform, h = 30 m
  • time taken, t = 10 min
  • rate of loss of water-mass, m = 0.4 kg.min^{-1}

Here, according to the given situation the bucket moves at the rate,

v=3 m.min^{-1}

The mass varies with the time as,

M=(10-0.4t) kg

Consider the time interval between t and t + ∆t. During this time the bucket moves a distance

∆x =  3∆t meters

So, during this interval change in work done,

∆W = m.g∆x

<u>For work calculation:</u>

W=\int_{0}^{10} [(10-0.4t).g\times 3] dt

W= 3\times 9.8\times [10t-\frac{0.4t^{2}}{2}]^{10}_{0}

W= 2352 J

5 0
3 years ago
*PLEASE HELP! FIRST CORRECT ANSWER GETS BRAINLIEST!*
scoray [572]

Answer:

Explanation:

1 advantage of genetic engineering:

It allows for a faster growth rate. Because with genetic engineering, plants and animals are allowed to be modified so their maturity would occur at a quicker pace.

1 disadvantag of genetic engineering:

The nutrition value of foods can be less. For example, in a research show that genetic enginnering make chicken increase the fat content by 220% but reduced the amount of protein.

1 advantage of cloning:

When cloning, the object would be able to create tissue and organs that doctor can use when needed during the surgery.

1 disadvantage of cloning:

If original organism has genetic deffects, it will be passed down through all the continuous generations

1 advantage of artificial selection (can be called as selective breeding):

It will provide improvements to plants and animals. For example, seedless fruits, increast the tast of food, etc.

1 disadvantage of artificial selection (can be called as selective breeding):

It may lead to a lack of variety in plant or animal species. As the breeding is selective so the variety in plant would be decrease. For example, people like seedless fruits than normal included-seed fruit so that would make the new fruit become more popular and may lead to decrease the diversity in fruits.

Hope this help you :3

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