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3 years ago

Why did the ball move the same distance when it was on the flatbed truck that accelerated 0.2 m/s?

1 answer:

8 0

The relative velocity of the ball with respect to the truck is same as that of the truck with respect to the ball at equal time.

<h3>What is relative velocity?</h3>

The relative velocity of an object is the velocity of the object observed with respect to rest frame of another object.

<h3>Distance traveled by the object</h3>

The distance traveled by each object is determined from the prouduct of velocity and time of motion.

d = vt

where;

v is velocity
t is time

Thus, if the ball moved the same distance when it was on the flat bed truck, then the relative velocity of the ball with respect to the truck is same as that of the truck with respect to the ball at equal time.

Learn more about relative velocity here: brainly.com/question/17228388

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A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direct

-Dominant- [34]

Answer:

The velocity of the other fragment immediately following the explosion is v .

Explanation:

Given :

Mass of original shell , m .

Velocity of shell , + v .

Now , the particle explodes into two half parts , i.e $\dfrac{m}{2}$ .

Since , no eternal force is applied in the particle .

Therefore , its momentum will be conserved .

So , Final momentum = Initial momentum

$mv=\dfrac{mv}{2}+\dfrac{mu}{2}\\\\u=v$

The velocity of the other fragment immediately following the explosion is v .

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3 years ago

1) When making a digital animation of a person running on a sidewalk in a scene, which parameter would be an initial condition?

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Answer:

The position of the person's feet. a running shoe company studying how different surfaces affect the life of a shoe tread

Explanation:

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3 years ago

Which object has the least amount of kinetic energy? a car driving down a road a soccer ball rolling down a hill a bicycle locke

mars1129 [50]

<span> a bicycle locked to a bike rack im pretty sure</span>

7 0

3 years ago

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Calculate the ratio of the kinetic energy of an electron to that of a proton if their wavelengths are equal. Assume that the spe

goblinko [34]

Answer:

the ratio of the kinetic energy of an electron to that of a proton if their wavelengths are equal is 1835.16 .

Explanation:

We know, wavelength is expressed in terms of Kinetic Energy by :

$\lambda=\dfrac{h}{\sqrt{2mE}}$

Therefore , $E=\dfrac{h^2}{2 \lambda^2 m}$

It is given that both electron and proton have same wavelength.

Therefore,

$E_e=\dfrac{h^2}{2 \lambda^2 m_e}$ .... equation 1.

$E_p=\dfrac{h^2}{2 \lambda^2 m_p}$ .... equation 2.

Now, dividing equation 1 by 2 .

We get ,

$\dfrac{E_e}{E_p}=\dfrac{\dfrac{h^2}{2 \lambda^2 m_e}}{\dfrac{h^2}{2 \lambda^2 m_p}}\\\\\\\dfrac{E_e}{E_p}=\dfrac{m_p}{m_e}$

Putting value of mass of electron = $9.1\times 10^{-31}\ kg$ and mass of proton = $1.67\times 10^{-27}\ kg.$

We get :

$\dfrac{E_e}{E_p}=\dfrac{1.67\times 10^{-27}\ kg}{9.1\times 10^{-31}\ kg}=1835.16$

Hence , this is the required solution.

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4 years ago

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Name the process scientists use to gain knowledge about the physical world

saveliy_v [14]

The answer would be the Scientific Method.

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3 years ago

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