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's the algebraic expression of "15 less than a number squared"?
what place value would i put 805 tens in
What rules does Jonas's father disobey
What is Circular Motion?
Tia is buying paper cups and plates. Cups come in packages of 12,and plates come in packages of 10. She wants to buy the same number of cups and plates, but pla
Brandon owns nearly 2 times as many CDs ads Ingrid. Brandon owns 56 CDs. Write an equation and use it to estimate the number n of CDs Ingrid owns.
what is 24 ten thousands
Can someone help me ?????
-2m + 4m + 5 = -3 Tell me what you did please!
convert to a scientific notation  860,000,000,000 =