djps4games djps4games

16-10-2018
Physics

contestada

A sprinter had a mass of 80 kg and a kinetic energy of 4,000 J. What is the sprinters speed?

Respuesta :

taibamah taibamah

17-10-2018

K.E = 1/2mv²

4000 = 1/2 ˣ 80 ˣ v²

4000 ˣ 2 = 80 v²

8000 = 80 v²

8000/ 80 =v²

100 = v²

Taking square root on b/s

√100 = √v²

10 = v

Answer Link

Otras preguntas

In Thebes, directly in front of the royal palace, which stands in the background, its main doors facing the audience. Enter ANTIGONE leading ISMENE away from th

how many total states were there in 1820

Which sentence is written in the active voice? A) Janine's idea was liked by everyone. B) The fundraiser was planned by the band. C) The trombone pla

Jan is employed by an insurance company. she reviews applications to determine whether her company should insure the applicant. if insurable, jan assigns the ap

Summarize the video by combining the central ideas and key details from your notes. Dr. Z notes from critical thinking

Registration records show that 5 out of 8 students at college are older than 25 years. If there are 1200 students at the college, how many would you expect t

Match each type of extreme weather with its description. A. Tornado An intense storm that begins over tropical waters and includes heavy rain and strong winds B

Which two groups had laid claims on Canada? Dutch English French Spanish

Quien limpia los cuartos en un hotel

write the given expression in terms of i : √-245 a) -245 i b) -7 i √5 c) i √-245 d) 7 i √5