Physics, 18.11.2020 17:30 bentleyevans15

An apple is dropped from rest. A. Calculate the vertical velocity of the apple at 2.5 seconds? B. Calculate how far the apple has fallen in 2.5 seconds?

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Answer from: sameh0425

A. 24.5 m/s

B. 30.63 m

Explanation:

A. Determination of the vertical velocity of the apple.

Initial velocity (u) =?

Time (t) = 2.5 s

Acceleration due to gravity (g) = 9.8 m/s²

Vertical velocity (v) =?

v = u + gt

v = 0 + (9.8 × 2.5)

v = 0 + 24.5

v = 24.5 m/s

Thus, the vertical velocity of the apple is 24.5 m/s.

B. Determination of how far the apple has fallen.

Time (t) = 2.5 s

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) =.?

h = ½gt²

h = ½ × 9.8 × 2.5²

h = 4.9 × 6.25

h = 30.63 m

Thus, the apple has fallen 30.63 m in 2.5 s.

Answer from: Quest

Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is a colourless liquid organic compound with the chemical formula ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called glacial acetic acid. vinegar is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. it is classified as a weak acid since it only partially dissociates in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7 3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366 chemblchembl539 chemspider171 drugbankdb03166 echa infocard100.000.528ec number200-580-7e numbere260 (preservatives)gmelin reference1380iuphar/bps1058keggd00010 meshacetic+acidpubchem cid176rtecs numberaf1225000uniiq40q9n063p un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4) key: qtbsbxvteameqo-uhfffaoysa-n smilescc(o)=o

Answer from: Quest

Gravity bc it’s gravity

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An apple is dropped from rest. A. Calculate the vertical velocity of the apple at 2.5 seconds? B. Ca...

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