Mackenziesova Mackenziesova

12-02-2015
Physics

contestada

a ball is dropped from rest at a height of 80 m above the ground. what is the speed just as it hits the ground?

Respuesta :

12-02-2015

Δx=Vi(t)+.5at²
Δx=80
a=9.8
Vi=0 since its from rest, the initial velocity is 0.
80=0+.5(9.8)t²
t=16.33
You can use one of the big five equations: Vf=Vi+at
Vf=0+9.8(16.33)
Vf=160.034 m/s

Answer Link

Otras preguntas

Can someone please help!! For my finals ! (50 points)

Given that lines b and c are parallel, select all that apply.

in line 17 the word innovative most nearly means ? sentimental hopeful creative expensive

3. Which is a chemical change? (2 points)breaking a block of solid ice into smaller piecessplitting water into hydrogen and oxygenboiling waterfreezing liquid w

If 8x−4y=20 and 4x−8y=4, what is the value of x−y? (A) 1 (B) 2 (C) 3 (D) 4 (E) 6

Leon uses a pressure gauge to measure the air pressure in one of his car tires. The gauge shows that the pressure is 220 kilopascals. The temperature is 297 K,

Where does the following basic human right find it’s orgin? “Innocent until proven guilty”

In "The Language of African Literature," what does Ngugi wa Thiong'o say changes for indigenous peoples when they are forced to learn another language?

Find the length of AC express your answer in terms of pie

You need a disk system that provides the best performance for a new application that frequently reads and writes data to the disk. You aren't concerned about di