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3 years ago

Shelby travels 6 meters East, 2 meters North, 3 meters West, and then 2 meters South. What is their displacement?

Physics

1 answer:

yaroslaw [1]3 years ago

7 0

Answer:

3 m

Explanation:

At last, Same line; so, 6-3 = 3

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The Achilles tendon connects the muscles in your calf to the back of your foot. When you are sprinting, your Achilles ten-don al

lisov135 [29]

<em>A) We know that the gravitational Weight of a Body is given by,</em>

$F=8mg$

The expression of young's modulus is given by,

$Y=\frac{Fl}{A\Delta l}$

Replacing the value of the force in the equation of young's modulis we have,

$Y = \frac{8mg*l}{A\Delta l}$

Re-arrange the equation for the rate of l, we have,

$\Delta l = \frac{8mgl}{AY}$

Our values here are giving by,

$m=70kg$

$g=9.8m/s^2$

$l=15*10^{-2}m$

$A=110*10^6m^2$

$Y = 1.5*10^{10}N/m^2$

Replacing in the previous equation we have that,

$\Delta l = \frac{8(70)(9.8)(15*10^{-2})}{110*10^6*1.5*{10}}$

$\Delta l = 4.98*10^{-3}m$

We note that Achilles tendon stretch around 5mm

<em>B) The strain is given by the equation,</em>

$\epsilon = \frac{\Delta l}{l}$

The fraction of the tendon's lenght is the ratio of the change in lenght to the streched lenght, that is

$\alpha = \frac{\Delta l}{l}$

$\alpha = \frac{5*10^{-3}}{15*10^{-2}}$

$\alpha = 0.033$

The fraction of the tendon's lenght is 0.0333

3 0

4 years ago

3.972 kilometers is the same distance as how many centimeters? (Remember to include units in your answer)

Helga [31]

Answer:

397200 centimeters

4 0

3 years ago

How much work is needed to stop a 1,110 kg car that is moving straight down the

schepotkina [342]

Answer:

382.74 kJ.

Explanation:

The work that must be done to stop an 1100 kg car travelling at 59 km/h is - 382.74 kJ.

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3 years ago

Assumption of projectile motion

trasher [3.6K]

Answer:

Three assumtions are made

Explanation:

The acceleration due to gravity is constant. The medium of projectile motion is assumed to be non-resistive ( i.e. air resistance is negligible)

The rotation of the earth does not affect the motion

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4 years ago

How to cure bor-edom????

Allisa [31]

Answer:

keep ur self busy

Explanation:

read a book

catch up on homework

get ahead of the class

watch tv

go outside

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3 years ago

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