emily41950

24.02.2021 • 

Physics

A builder will place floor in a house. The total area of the house is 245m^2 and the floor selected comes in pieces of 20m wide and 30cm long. A) How many pieces of floor are needed?
B) If the floor is packed in boxes of 1.2m^2, how many boxes should he buy?
C) The floor is sold at $ 199.00 m^2. How much will he pay for the entire floor?

Ответ:

haddockc2689

12.12.2020

Physics

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AngleVyVy^2/(2*g)

25         6.3    2.02

30          7.5  2.87

45         10.65.73

50         11.56.75

65         13.69.44

70         14.110.1

Vy = vertical velocity = V sin theta

2 g H = Vy^2      since the final velocity is zero

H = Vy^2 / (2 * g)

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