Question and answer
What's the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J B. 12,000 J C. 2,940 J D. 5,880 J
The kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s is: 6,000 J. Solution: KE = 1/2 * m * v^2 KE = (1/2) * 30 * (20^2) KE = (1/2) *30* 400 KE = 6000 J
s
Question
Asked 6/17/2019 7:58:56 AM
Updated 350 days ago|8/11/2020 12:52:12 AM
1 Answer/Comment
Get an answer
New answers
Rating
8
The kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s is: 6,000 J.
Solution:
KE = 1/2 * m * v^2
KE = (1/2) * 30 * (20^2)
KE = (1/2) *30* 400
KE = 6000 J
Added 350 days ago|8/11/2020 12:52:12 AM
This answer has been confirmed as correct and helpful.
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
The transmission of heat requiring the movement of a liquid or a gas is A. radiation. B. transduction. C. conduction. D. convection.
Weegy: The transmission of heat requiring the movement of a liquid or a gas is convection. (More)
Question
Updated 110 days ago|4/8/2021 2:30:17 AM
0 Answers/Comments
The main difference between turbojets and rocket engines is the fact that A. rocket engines need oxygen from the air. B. rocket engines aren't dependent on oxygen from the air. C. turbojets aren't dependent on oxygen from the air. D. turbojets carry their own supply of oxygen as oxidizers.
Question
Not Answered
Updated 241 days ago|11/28/2020 4:57:39 PM
1 Answer/Comment
The main difference between turbojets and rocket engines is the fact that rocket engines are not dependent on oxygen from the air.

Added 241 days ago|11/28/2020 4:57:39 PM
This answer has been confirmed as correct and helpful.
Which one of the following substances is a liquid fuel used in rocket engines? A. Potassium perchlorate B. Liquid oxygen C. Ammonia D. Sodium nitrate
Question
Not Answered
Updated 241 days ago|11/28/2020 4:57:54 PM
1 Answer/Comment
Liquid oxygen is a liquid fuel used in rocket engines.
Added 241 days ago|11/28/2020 4:57:54 PM
This answer has been confirmed as correct and helpful.
During the stage of internal-combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, A. the intake valve is open, and the exhaust valve is closed. B. both the intake and exhaust valves are open. C. both the intake and exhaust valves are closed. D. the exhaust valve is open, and the intake valve is closed.
Question
Not Answered
Updated 356 days ago|8/5/2020 1:05:01 PM
1 Answer/Comment
During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, both valves will be closed.

Added 356 days ago|8/5/2020 1:05:01 PM
This answer has been confirmed as correct and helpful.
Convert the temperature 288 K to degrees Celsius. A. 561°C B. 748°C C. –172°C D. 15°C
Weegy: The temperature 288 K converted to degrees Celsius is 15°C. (More)
Question
Updated 6/17/2019 7:16:22 PM
0 Answers/Comments
34,186,011
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
Earthquakes can only occur at a fault if the fault experiences ...
Weegy: The area in a fault where stress builds up is called the hypocentre zone.
7/27/2021 3:42:44 AM| 5 Answers
Define muscular endurance
Weegy: Muscular endurance is the ability of a muscle or group of muscles to sustain repeated contractions against a ...
7/19/2021 7:32:03 PM| 3 Answers
The Zero law Means
7/21/2021 2:04:29 AM| 3 Answers
How many cities are in pennsylvania
7/22/2021 5:04:58 PM| 3 Answers
What’s 2 plus 7
Weegy: 2 + 2 is 4. User: That’s 2 + 8 Weegy: Hi, how can help you? User: What’s 2 + 8 Weegy: 2 * 2 = 4 User: ...
7/22/2021 7:30:18 PM| 3 Answers
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
S
L
Points 865 [Total 1576] Ratings 2 Comments 845 Invitations 0 Offline
S
L
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
P
1
L
Points 707 [Total 5268] Ratings 23 Comments 477 Invitations 0 Offline
S
L
P
P
Points 622 [Total 3565] Ratings 0 Comments 622 Invitations 0 Offline
S
L
Points 473 [Total 474] Ratings 0 Comments 473 Invitations 0 Offline
S
L
L
P
Points 258 [Total 5669] Ratings 1 Comments 248 Invitations 0 Offline
S
L
P
P
L
P
Points 248 [Total 7176] Ratings 1 Comments 238 Invitations 0 Online
S
L
R
Points 244 [Total 735] Ratings 13 Comments 104 Invitations 1 Offline
S
L
Points 233 [Total 523] Ratings 0 Comments 233 Invitations 0 Offline
S
L
1
1
1
1
1
Points 141 [Total 2082] Ratings 14 Comments 1 Invitations 0 Online
S
L
1
1
1
Points 137 [Total 3125] Ratings 13 Comments 7 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.