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pishuonlain [190]
4 years ago
14

How does mass affect the speed of an object

Physics
1 answer:
s344n2d4d5 [400]4 years ago
4 0

speed is not affected by mass

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A 55-kg hiker starts at an elevation of 1600 m and climbs to the top of a 3100-m peak. (a) What is the hiker's change in potenti
Kisachek [45]

Answer

given,

mass of hiker = 55 Kg

elevation at start, h₁ = 1600 m

elevation at top , h₂ = 3100 m

a) change in potential energy

    \Delta P = m g (h_2 - h_1)

    \Delta P = 55 \times 9.8 \times (3100-1600)

    \Delta P = 55 \times 9.8 \times 1500

             ΔP = 808500 J

b) The minimum work required by the hiker will be equal to the change in potential energy.

The minimum work done

  W = Δ PE

      = 808500 J

c) Yes, work done can be more than this because hiker will exert more force to balance the force due to gravity.

3 0
3 years ago
_____ involves reviewing the project charter, requirements documents, and organizational process assets to create a scope statem
Nuetrik [128]

Answer:

The answer is Defining scope

Explanation:

Defining scope of a project is simply drawing the borders of the project. Therefore, defining scope involves reviewing the scope management plan, project charter, requirements documents, and organizational process assets to create a scope statement, adding more information as requirements are developed.

7 0
3 years ago
Factors affecting speed of sound in air​
zhannawk [14.2K]

Answer:

The Density of Medium: Sound requires a medium to travel. The density of the medium is among the factors which affect the speed of sound. ...

The Temperature of The Medium: Higher the temperature, the higher is the speed of sound in the medium.

Explanation:

hope it helps

4 0
3 years ago
Read 2 more answers
This question is divided into two parts. This is part (a) of the question. A proton accelerates from rest in a uniform electric
grin007 [14]

Answer:

The acceleration of proton is 5.56 x 10^10 m/s^2 .

Explanation:

initial velocity, u = 0

Electric field, E = 580 N/C

final speed, v = 10^6 m/s

(a) Let the acceleration is a.

According to the Newton's second law

F = m a = q E

where, q is the charge of proton and m is the mass.

a= \frac{q E}{m}\\\\a = \frac{1.6\times10^{-19}\times 580}{1.67\times 10^{-27}}\\\\a= 5.56\times 10^{10} m/s^2

4 0
4 years ago
Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, the hip’s speed at impact
Westkost [7]

Answer:

-5.8868501529 m/s² or -5.8868501529g

0.118909090909 s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{1.3^2-2^2}{2\times 0.02}\\\Rightarrow a=-5.8868501529\ m/s^2

Dividing by g

\dfrac{a}{g}=\dfrac{-57.75}{9.81}\\\Rightarrow a=-5.8868501529g

The acceleration is -5.8868501529 m/s² or -5.8868501529g

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{1.3-2}{-5.8868501529}\\\Rightarrow t=0.118909090909\ s

The time taken is 0.118909090909 s

7 0
3 years ago
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