As an object fall in a gravitational field, its speed increases. This is an example of potential energy transforming into what?

Physics

1 answer:

IrinaK [193]3 years ago

5 0

Answer:

potential energy is transformed into kinetic energy

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A gun with a muzzle velocity of 100 m/s is fired horizontally from a tower. Neglecting air resistance, how far downrange will th

Neporo4naja [7]

Answer:

313.6 m downward

Explanation:

The distance covered by the bullet along the vertical direction can be calculated by using the equation of motion of a projectile along the y-axis.

In fact, we have:

$y(t) = h +u_y t + \frac{1}{2}at^2$

where

y(t) is the vertical position of the projectile at time t

h is the initial height of the projectile

$u_y = 0$ is the initial vertical velocity of the projectile, which is zero since the bullet is fired horizontally

t is the time

a = g = -9.8 m/s^2 is the acceleration due to gravity

We can rewrite the equation as

$y(t)-h = \frac{1}{2}gt^2$

where the term on the left, $y(t)-h$ , represents the vertical displacement of the bullet. Substituting numbers and t = 8 s, we find

$y(t)-h= \frac{1}{2}(-9.8)(8)^2 = -313.6 m$

So the bullet has travelled 313.6 m downward.

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3 years ago

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svetlana [45]

I would say C. is the answer.

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3 years ago

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If State A is heated, which of the other two states would it more closely resemble? Explain.

Cloud [144]

Well if its a solid that your heating up then it would closely resemble a liquid and a gas. would be able to give a better answer if you provided more information

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3 years ago

A salt shaker sits 0.102 m from

Ivahew [28]

The maximum speed is 0.55 m/s

Explanation:

For an object in uniform circular motion, the force of friction between the object and the ground provides the centripetal force required to keep the body in motion. Therefore we can write:

$\mu_s mg = m\frac{v^2}{r}$