Physics
posted by Nikita .
In a mechanical experiment with an isolated object, only Ekin and Epot of the object change. If the object accelerates from 5 m/s to 10 m/s, its potential energy has?
My ans:
Potential energy has decreased by a factor of 2 because kinetic energy has increased by a factor of 2?

No, KE increases as v^2, or a factor of 4 here.
Respond to this Question
Similar Questions

help on physics
A 3.30 kg object is hanging from the end of a vertical spring. The spring constant is 48.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, … 
Physics
please check: Which of the following energy forms is associated with an object in motion? 
physics
A 2.40 kg object is hanging from the end of a vertical spring. The spring constant is 53.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, … 
science
How much work does it take to raise a 3kg object 5m into the air? 
science
1. How much potential energy does a 5kg block have if it is 2m above the ground? 
Physics
A 250 g object attached to a spring oscillates on a frictionless horizontal table with the frequency of 4 Hz and an amplitude of 20 cm. Calculate a) maximum potential energy of the system b) the displacement of the object when the … 
Physics ~Conservation of Energy~
1.) At one point in its fall, an object (m=2.5 kg.) has a kinetic energy of 5 J(joule) and a potential energy of 10 J. a) what is the total energy of the system? 
MathAlgebra
1. The force (in Newtons) applied to an object varies jointly as its mass and acceleration. How much force is needed to accelerate a 25 kg object by 3 m/s^2? 
physics
A 20 kg object is acted on by a conservative force given by F = 3.0 x  5.0 x 2, with F in newtons and x in meters. Take the potential energy associated with the force to be zero when the object is at x = 0. (a) What is the potential … 
Science
Consider which is not an example of how an object gains elastic potential energy by stretching is a trampoline part In what form are all potential energy the same What is making an ice block to melt Describe three forms of energy Imagine …