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IceJOKER [234]
2 years ago
5

When you jump from a height to the ground, you let your legs bend at the knees as your feet hit the floor.Why we do this in term

s in physics in momentum?
Physics
2 answers:
Viefleur [7K]2 years ago
8 0

Answer: Force:

Force is defined as the product of mass and acceleration. But it can also be defined as the rate of change of momentum with respect to time. That is: F =dp/dt

Explanation:

Now as we land on the floor, we bend legs at knees. This is to slow the change in the momentum of the body with time, so we apply less force on the ground and in return ground applies less force on the legs. This makes landing smooth. While we catch the ball we move hand backward even after catching it for small-time, this makes catching easier we experience less force.

olga_2 [115]2 years ago
7 0

Answer:

when you bend your knees you extend the amount of time which will decrease the force. impulse and momentum are the same.

Explanation:

Force is defined as the product of mass and acceleration. it is also defined as the rate of change of momentum with respect to time.

Now as we land on the floor, we bend legs at knees. This is to slow the change in the momentum of the body with time, so we apply less force on the ground and in return ground applies less force on the legs. This makes landing smooth.

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Answer:

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3 years ago
1) Arrange the following spectral regions in order of increasing energy: infrared, microwave, ultraviolet, visible.
Anton [14]

Answer:

The order of increasing energy is as follows

"microwave < infrared < visible < ultraviolet"

Option (A) is correct.

Explanation:

Given:

Arrange the following spectral regions in order of increasing energy: infrared, microwave, ultraviolet, visible.

From the formula of energy in terms of frequency.

  E = hf

Where h = planck constant, f = frequency of light.

From above formula we can conclude that higher frequency means higher energy.

In our case ultraviolet has higher frequency and microwave has lower frequency.

So ultraviolet has higher energy and microwave has lower energy.

microwave < infrared < visible < ultraviolet

Therefore, the order of increasing energy is as follows

"microwave < infrared < visible < ultraviolet"

7 0
3 years ago
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Elis [28]

Answer:

Each object exerts a force on the other, and the two forces are equal and in opposite directions

Explanation:

Newton's 3rd Law Of Motion:

For every action, there is an equal and opposite reaction.

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3 years ago
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A stationary 90 kg baseball pitcher throws a 0.15 kg baseball forward
Marina CMI [18]

Answer: momentum = 6kgm/s

Explanation:

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Velocity V = 40 m/s

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4 0
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The nucleus of most atoms is composed of which of the following sub-atomic particles?
Blababa [14]

Answer:

protons (+ charge) & neutrons (neutral charge)

however protons has a positive charge so it determined what atom it is.

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