nadaiyad35 nadaiyad35
  • 16-11-2020
  • Physics
contestada

4. How long would it take for a water balloon to fall 39 m if we dropped it starting from rest down an
elevator shaft from the 13th floor? Ignore air resistance and use a = -9.8 m/s2.
x, = x + vt + (1/2) a t?

Respuesta :

kdai253
kdai253 kdai253
  • 16-11-2020

Answer:

Around 2.8212 sec

Explanation:

Given the eqn x=1/2at^2+vot

your vo=0

39=1/2(-9.8)t^2

=7.95=t^2

=2.82sec

Answer Link

Otras preguntas

Did Napoleon defend or betray the ideals of the French Revolution?
What was the primary reason the Pilgrims came to the New World?
Who's is the promised Messiah Redeemer savior and lord
there are 12 rabbits in a cage. the ratio of white rabbits to all rabbits is 3:4. how many white rabbits are in the cage
Where did the major revolutions of 1848 occur?
A fire hose ejects a stream of water at an angle of 36.3 ° above the horizontal. The water leaves the nozzle with a speed of 21.9 m/s. Assuming that the water
Select the approximate values of x that are solutions to f(x) = 0, wheref(x) = -9x^2 + 7x + 2
The sum of a certain quantity "P" together with its two-third, and it's half becomes 234 What is the Quantity "P"?
why is the arabian peninsula in good location for trade? thxs!
How did the alliance system drag countries into WW1?