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Gekata [30.6K]
3 years ago
6

Infants normally are able to sit, stand, and walk ______, and climb and balance their feet in a squatting position ______.Within

first year, within second year
Biology
2 answers:
lapo4ka [179]3 years ago
8 0

Answer:

First year and second year.

Explanation:

The development of the infants starts from the day of the birth. The development of the baby includes the different stages and the development occurs at each month with physical and physiological changes.

During the first year of the development the child knows how to stand, walk, sit and react on the other people expressions. During the second year of the child development, the child knows about the balancing of their body and feet in the squat position.

Thus, the answer is first year and second year.

leonid [27]3 years ago
7 0

Answer: within the first year, within the second year

Explanation:

Many toddlers start to sit, stand and walk by the age of 9 to 15 months of age. These are because of the changes that occur in the brain and the spinal cord. By the age of two the brain develops coordination with the muscles of the body and the infant establishes balance on the feet and hip muscles becomes strong that aids in achieving the squatting position.

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The answer would be:

6,250 joules

Here's how to do it:

KE = \frac{1}{2}mv^{2}

KE = kinetic energy (joules)

m = mass (kg)

v = velocity (m/s)

So with that formula let's figure out what was given to you.

500 kg and 5m/s

You know which is which based on the unit.

m = 500kg

v = 5m/s

Now all you need to do is plug it into your formula and solve.

KE=\frac{1}{2}mv^{2}

KE= \frac{1}{2}(500kg)(5m/s)^{2}

KE = \frac{1}{2}(500kg)(25m^{2/}s^{2})

KE = \frac{1}{2}(12,500kg\cdot m^{2}/s^2})

KE = 6,250kg\cdot m^{2}/s^{2}

The unit kg\cdot m^{2}/s^{2} also means joules

So the final answer is 6,250 joules.

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