Homework Help: physics

Posted by Anonymous on Saturday, January 16, 2010 at 2:49pm.

You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object’s speed. If you do work W, suppose the object’s final speed is v. What will be the object’s final speed if you do twice as much work?
1. 4 v
2. 2 v
3. Still v
4.v/√2
5. v*√2

physics - drwls, Saturday, January 16, 2010 at 2:55pm
Work done is proportional to V^2.

If work doubles, the V must increase by a factor sqrt2

Answer this Question

Related Questions

physics - You do a certain amount of work on an object initially at rest, and ...
physics - You do a certain amount of work on an object initially at rest, and ...
physics - power(3) - A force of 48 N pushes a 2 kg object initially at rest a ...
Physics - An object of mass .550kg is lifted from the floor to a height of 3.5m ...
Physics - Outside the International Sapce Station, a 60 kg astronaut holding a 4...
Physics - A force of 310 N is applied horizontally to a crate in order to ...
Physics - Which of the following is true? a. Conserved forces cannot do work b. ...
Physics - Two objects of different mass start from rest, are pulled by the same ...
Static Fricition - An object of mass 2k is placed on the edge of the floor of a ...
PHYSICS - according the graph sown, the net force acting on an object varies wth...

For Further Reading

First Name:
School Subject:
Answer: