callmelako017 callmelako017

15-04-2022
Physics

contestada

The kinetic energy of a javelin is 81 J, and its speed is 9.0 m/s. What is its mass?

A. 0.5 kg

B. 1.0 kg

C. 2.0 kg

D. 9.0 kg

Respuesta :

jsimpson11000 jsimpson11000

15-04-2022

Answer:

2 kg

Explanation:

K.E. = 1/2 m v^2

81 = 1/2 m (9^2)

1 = 1/2 m

m = 2 kg

Answer Link

Otras preguntas

Miguel currently earns $9 per hour at work. His hourly wage will increase by 70¢ every 5 months for the first year. In a function that models Miguels average ho

What country group recorded "Christmas in Dixie" in the early 1980's?

When does Macbeth's ultimate fall occur in act 4?

Until the 1800s, _______ produced almost 80 percent of the goods being traded. A. Europe B. Asia C. Africa D. South America

what did the chumash use to make things

The money used in jordan is called dinar ,The exchange rate is $3 to 2 dinar how many dollars would you recieve if you exchanged 22 dinar ?

The Hebrew nation was split into two parts: _____. Judah and Tyre Israel and Judah Israel and Sinai

10-3.2n;n=2. What the answer

Name the original eight reindeer from the 'Twas the night Before Christmas' poem

Which part of the earth system interacts with solar flares? A. lithosphere B. hydrosphere C. atmosphere D. magnetosphere PLZZZZZZZZZZZZZZZZZZZZZZ HELLLLLLLL