2 years ago

When a ball is thrown vertically upward, its velocity goes on decreasing. What happens to it

Physics

1 answer:

Tems11 [23]2 years ago

3 0

Answer:

it increases I think.........

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The carts are moving on a level, frictionless track. After the collision all three carts stick together. Find the speed of the c

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0.13 m/s

Explanation:

Unfortunately, I don't have an explanation but I guessed the correct answer.

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3 years ago

Your mom is making lunch which forces are acting on your mom

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An ultraviolet wave traveling through a vacuum has wavelength of 4.0 x 10^-7 m. The waves frequency, written in scientific notat

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1 year ago

The kinetic energy of a moving object is E=12mv2. A 61 kg runner is moving at 10kmh. However, her speedometer is only accurate t

jek_recluse [69]

Answer:

$e=3367.2J$

% $e=1.43$ %

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From the exercise we know two information. The real speed and the experimental measured by the speedometer

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Since the speedometer is only accurate to within 0.1km/h the experimental speed is

$v_{e}=10km/h-0.1km/h=9.9km/h=2.75m/s$

Knowing that we can calculate Kinetic energy for the real and experimental speed

$E_{r}=\frac{1}{2}mv^2=\frac{1}{2}(61000g)(2.77m/s)^2=234023J$

$E_{e}=\frac{1}{2}mv^2=\frac{1}{2}(61000g)(2.75m/s)^2=230656J$

Now, the potential error in her calculated kinetic energy is:

$e=E_{r}-E_{e}=(234023-230656)J=3367.2J$

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3 years ago

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If it was close we would die.

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Probably has something to do with the earths original formation.

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3 years ago

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