sofiarodr sofiarodr
  • 23-07-2017
  • Physics
contestada

A ball is thrown directly downward with an initial W speed of 8.00 m/s from a height of 30.0 m. After what time interval does it strike the ground?

Respuesta :

froffiek froffiek
  • 23-07-2017
Vf^2=Vi^2+2ad
Vf^2=64+2(9.8)(30)
Vf^2=652
Vf=25.5

Now use Vf=Vi+at

25.5=8+2(9.8)t
solve for t
t=1.789 s
Answer Link

Otras preguntas

How does being physically fit affect your resting heart rate?
A worker is hired for $80 a day on the condition that if business is slow, the worker will only receive half pay.  At the end of 20 days, the worker receives $1
By which name was William the Conqueror known in his native land?
the product of two consecutive positive even integers is 14 more than their sum
What is a compound word of a foot that is bare. Join two words from the riddle to make a compound word
How do u get the answer for 2/3✖️12=
8a2 + 6a = 5 how do I do this?
Three consecutive even numbers add up to a number between 100 and 120. What might the numbers be?
What is 1/2 of a liter in mL?
Write 115.9% as a fraction