jessicasanchez78 jessicasanchez78
  • 01-11-2018
  • Physics
contestada

if an object starting from rest falls 5.7 seconds how far does it fall

Respuesta :

elbunt
elbunt elbunt
  • 01-11-2018
Kinematic question!
Start with your knowns!

[tex]t = 5.7s \\ v0 = 0 \frac{m}{s} \\ a = - 9.8 \frac{m}{ {s}^{2} } [/tex]
we want to find x!

the only kineamtic that works with this info is the third!
[tex]x = v0 \times t + \frac{1}{2} \times a \times {t}^{2} [/tex]
so we plug in our values and get
[tex]x = 0 + \frac{1}{2} \times ( - 9.8 \frac{m}{ {s}^{2} } ) \times ( {(5.7s)}^{2} )[/tex]
this'll equal out to -159.2 meters.

our units equal out, so we know our answer is correct!
Answer Link

Otras preguntas

please answer my question
The cross-price elasticity of demand between product x and product y is 2. it can be inferred that x and y are
108.92 in expanded form
Select the four statements are true of the Declaration of Independence. A)one section stated grievances against England B)written by Thomas Jefferson C)written
how does a traiff discourage trade
What types of regions do people generally avoid living in?
Which statement best describes the Native American tribes of the Mogollon, Hohokam, and Anasazi? a) They were mound builders who lived in the southeastern part
Justify your choice by explaining why it is a biotic factor. Use complete sentences.
What are three things you can learn by studying history?
△ABC has vertices at A(−1, 4) , B(3, 1) , and C(0,−3) . Select from the drop-down menus to correctly complete the statements.