10 pts A pitcher throws a baseball with a velocity of 33 m/s. If the ball has a mass of 4 kg, how
much kinetic energy does the ball have?

The answer is

Explanation:

The kinetic energy of an object given it's mass and velocity can be found by using the formula

where

m is the mass

v is the velocity

From the question

m = 4 kg

v = 33 m/s

The kinetic energy is

We have the final answer as

Hope this helps you

2,178J

Explanation:

The formula is [ KE = 1/2mv² ] where m = mass and v = velocity.

KE = 1/2(4)(33)²

KE = 1/2(4)(1089)

KE = 1/2(4356)

KE = 2178

Best of Luck!

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.