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vazorg [7]
3 years ago
13

Using ideas of forces explain why the parachutist reaches terminal velocity and why opening the parachute reduces the terminal v

elocity
Physics
1 answer:
allsm [11]3 years ago
8 0
Don’t download the file it’s a virus
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The heavyweight boxing champion of the world punches a sheet of paper in midair, bringing it from rest up to a speed of 26.5 m/s
enyata [817]

corrected question:The heavyweight boxing champion of the world punches a sheet of paper in midair, bringing it from rest up to a speed of 26.5 m/s in 0.044 s . The mass of the paper is 0.003 kg. Part A Find the force of the punch on the paper

Answer:

Force=1.8N

Explanation:

Newtons third law states that in every action there is equal and opposite reaction.

The force of the punch will be the force that moves the paper by a speed of 26.5m/s.

F=ma

F=m\frac{v-u}{t}

m=0.003kg , v=26.5m/s  u=0(the paper is punched from rest) t=0.044s

F=0.003*\frac{26.5-0.044}{0.044}

F=1.8N

4 0
4 years ago
What is the theorem that says that impulse equals change in momentum
Marysya12 [62]
The impulse-momentum theorem

8 0
4 years ago
Read 2 more answers
A layer cake profile of different soil types is exposed when we dig into the earth. Geologists reason that these layers were lai
Len [333]

The layer cake profile of different soil types having older soil type at the bottom of the layer is proved by the law of superposition.

Explanation:

The literal meaning of the word superposition means arranging one over the other. So the first generation soil or rocks will be deposited first on the mantle followed by the coming generation of soils and rocks. Due to different kinds of disasters like tides, earthquake, soil erosion etc., the new soil or rocks coming from any other region will get deposited on the surface of the old soil layer just like a layer cake format.

So the presence of older soil in the bottom most part of the mantle and the youngest soil or rock in the topmost surface of Earth is proved by the law of superposition.

3 0
4 years ago
Answer both and i’ll venmo u rn if ur right pls pls
Masteriza [31]

Answer:

2.5

Explanation:

25-22.5n= will give you 2.5

5 0
3 years ago
Read 2 more answers
A 481-m long spaceship passes by an observer at the speed of 2.70×10^8 m/s. What length does the observer measure for the spaces
galben [10]

Answer:

209.66 m

Explanation:

Given:

Original length of the spaceship, L = 481 m

Speed of the spaceship, v = 2.70 × 10⁸ m/s

Now,

using the concept of length contraction, we have

L=\frac{L'}{\sqrt{1-\frac{v^2}{c^2}}}

where,

L' is the observed length

c is the speed of the light

Thus,

on substituting the respective values, we get

481=\frac{L'}{\sqrt{1-\frac{(2.70\times10^8)^2}{(3\times10^8)^2}}}

or

L'  = 209.66 m

3 0
4 years ago
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