tfeemstertyreese1616 tfeemstertyreese1616
  • 03-11-2016
  • Physics
contestada

A child throws a penny straight down into a wishing well. The penny's initial speed is 2 m/s. If the penny takes 3 seconds to hit the water, how deep is the well?

Respuesta :

antek
antek antek
  • 03-11-2016
[tex]L = v_0\cdot t + \frac{1}{2}gt^2[/tex]

In this case v_0 = 2 m/s and t=2
Putting everything in will be

[tex]L = 2\cdot 3 + \frac{1}{2}\cdot9.82\cdot 2^2 = 6 + 19.64 = 26[/tex]

So the answer is 26 m.
Answer Link

Otras preguntas

what is the kingdom and phylum of a euglena protest?
If ab = 10 and a2 + b2 = 30, what is the value of (a + b)^2?
What is 0.05 percent of 6.5?
What is 0.05 percent of 6.5?
How many grandparents have my grandparents? who can solve it is very good on maths! it is just a lpgic problem! i know the answer :)
China, Korea, and Japan share cultural similarities in part due to their (1) clashes with Russian imperialists (2) shared river systems (3) contacts through tra
Which of the allies suffered the greatest losses on D-Day
What is 1997 from 2014????????????
USE A NUMBER LINE TO FIND 8/9 / 8/45.
What are abiotic factors of the enviroment lynx