The variable $m$ represents the mass. Its unit is kilogram. We are informed that the mass of the object is $15kg$ . The variable $v$ represents the linear velocity. Its unit is meter per second. We are informed that the linear velocity of the object is $20m/s$ . Let's find the kinetic energy of the object by substituting these values in the formula.

$KE=\frac{15kg.(20m/s)^2}{2}$
$2.KE=15kg.400m^2/s^2$
$2.KE=(6000)kgm^2/s^2$
$KE=(3000)kgm^2/s^2=3000J$

5 0

11 months ago

How many Hydrogen atoms are in 4HN₃?

Kazeer [188]

4 Hydrogen Atoms should be correct. Because the 4 infront of it signifies the amount of hydrogen. It would also be 4 hydrogen atoms if it were written as H4N3, because the 4 is still around the H (as long as the 4 is under scored)

6 0

1 year ago

How do I do this and what are the answers?

vodka [1.7K]

I cannot see your question to help you... sorry

6 0

3 years ago

Please help soon!!! About Chemistry and noble gas notations.

Svetach [21]

Answer:

play video games all days

Explanation:

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8 0

2 years ago