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

Find the value of x in the figure below. Round to the nearest tenth.
An mp 3 player costs $60. If a 6.75% sales tax is add, what is the total cost?
A typical american family uses 1000 kwh of electricity a month. what is the average rrns current in the 120 v power line to a typical house?
how many solutions are there to the equation below? 8 (x-3) = 8x-24
The measure of angle O is 110°. what is the angle of r and p?
The tarnish that forms on objects made of silver is solid silver sulphide. This can be removed by reacting it with aluminium metal to produce silver metal and s
what is -3×^2+1467x-86940=0 ?​
to rationalize the denominator of 2√10/3√11, you should multiply the expression by which factor?
How did the agricultural revolution lead to an increase in human population numbers? How did the agricultural revolution lead to an increase in human population
18. A person pulls horizontally with a force of 64 N on a 14-kg box. There is a force of friction between the box and the floor of 36 N. Find the acceleration