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4 years ago

An object has 100J of KE. It has a mass of 10kg. How fast is it travelling

1 answer:

4 0

$k = \frac{1}{2} mv {}^{2}$
$100 = \frac{1}{2} \times 10 \times v {}^{2}$
$100 = 5v {}^{2}$
$v {}^{2} = 20$
$v = \sqrt{20} = 2 \sqrt{5}$

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3 years ago

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3 years ago

What is the distance fallen for a freely falling object 1 s after being dropped from a rest position? What is the distance for a

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<h2>Distance traveled in 1 second after drop is 4.9 m</h2><h2>Distance traveled in 4 seconds after drop is 78.4 m</h2>

Explanation:

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Substituting

s = 0 x t + 0.5 x 9.8 x t²

s = 4.9t²

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3 years ago

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The magnitude of this vector is 15

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

The magnitude of a vector formula is used to calculate the length for a given vector (say v) and is denoted as |v|. So basically, this quantity is the length between the initial point and endpoint of the vector.

Let vector be = a

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component of vector in y direction = 10 j

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vector a = 10 i + 10 j + 5 z

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To learn more about vector here

brainly.com/question/24256726

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