Register
A 20.0 kg object is at rest, and then speeds up to 16.0 m/s. How much work was done on this system?
139k views
5 votes
A 20.0 kg object is at rest, and then speeds up to 16.0 m/s. How much work was done on this system?

User Urfusion
by
5.8k points

1 Answer

2 votes
Work=Change in Kinetic Energy
1/2mVf^2-1/2Vi^2=W
1/2(20)(16)^2-1/2(20)(0)^2=W
2560-0=W
W=2560J


User Brian Ensink
by
5.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.6m questions

8.7m answers

Other Questions

A ball is dropped from rest at height of 50m above the ground (a) What is its speed just before it hits the ground (b) How long does it take to rech the ground.
What is the objects motion from A to B?
In which scenario is an animal doing work? Check all that apply. A cat lifts up her kitten by its neck. A dog rubs his back against a large tree. A bird carries a worm to its nest. A goat butts its head
What is the acceleration of an object with mass of 42.6 kg when an unbalanced force of 112 N is applied to it?
The___ is composed of Earth's crust and solid upper mantle A. Inner core B outer core C lithosphere D asthenosphere
Link Copied!