Mackenziesova Mackenziesova

12-02-2015
Physics

contestada

a ball is dropped from rest at a height of 80 m above the ground. what is the speed just as it hits the ground?

Respuesta :

12-02-2015

Δx=Vi(t)+.5at²
Δx=80
a=9.8
Vi=0 since its from rest, the initial velocity is 0.
80=0+.5(9.8)t²
t=16.33
You can use one of the big five equations: Vf=Vi+at
Vf=0+9.8(16.33)
Vf=160.034 m/s

Answer Link

Otras preguntas

Foreshadowing is when an author builds suspense in a story by making the reader think something big is coming or when an author leaves hints about what might ha

Henry's patio is in the shape of a rectangle. He said the perimeter of the patio is 48 feet . He knows that one side is 9 feet wide . How many feet long are all

Which of these human actions has the greatest influence on the quality of air? A. building houses B. driving cars C. creating dams D. littering

What is the smallest number over 200 that is a multiple of 6?

The heavyweight boxer told the press that he was ready foran "apple fight" against the rookie.How would the meaning of the sentence be affected if the phrase ap

what is the answer to 2(4 + 2)

I need help asap :):):)

What is the best summary of the main conflict in "The Lottery"? Who in the excerpt represents a new idea that is in conflict with society’s expectations?

A station running TCP/IP needs to transfer a file to a host. The file contains 2048 bytes. Assume a payload size of 512 bytes would be sent per packet and both

Read the following excerpt from an editorial about the nature of reality television: (1) So-called “reality” TV shows dominate the dials of network and cable t