Can you feel the
Kenergy?
Kenergy?
The equation for kinetic energy.
What is K=1/2mv2?
An expression for the work done by a nonconservative force.
What is Wnc=Ef-Ei?
The equation for power.
What is P=W/t?
The corresponding equations for gravitational potential energy and spring potential energy.
What are PEg=mgh and PEs=1/2kx2?
The equation for work.
What is W=Fcos(theta)x
The only factor that determines the final speed of an object that falls from rest.
What is the height from which an object falls?
A nonconservative force characterized by the molecular interactions between two surfaces.
What is friction?
The unit for power.
Watt is a Watt?
This happens when you change your reference point for potential energy.
What is nothing?
The method by which an objects kinetic energy changes.
What is work?
The kinetic energy of a 1.0 kg object that travels at 2.0m/s.
What is 2 J?
What is 1 J?
The power of a system that does 55 J of work in 10 s.
The potential energy of an object with mass 5 kg at a height 7 m off the ground, which is the reference level.
What is 350 J?
The work done by a 10 N force over a distance of 35 m.
What is 350 J?
The velocity of a 6 kg object that is accelerated by a spring with a spring constant of 10 N/m over a distance of 2 m.
What is 2.58 m/s?
What is 28.5 J?
The power needed in a pulley system to pull a 6 kg block along a 2 m path with a 100 N force over 5 seconds.
The height to which a spring system with spring constant 10 N/m and compressed by 150 cm can push a 5 kg object, provided the spring launches the object up.
What is 0.225 m?
The magnitude of the work done by gravity on a 7 kg object as it falls down 10 m.
What is 700 J?
The expression for the velocity of an object with only gravitational potential initially and kinetic energy finally.
Hint: There is no dependence on mass.
What is v=sqrt(2gh)?
The expression for the work done by a nonconservative force on an object that is accelerated by a spring to some velocity.
Wnc=1/2(kx2-mv2)
The expression for power in terms of force and velocity.
What is P=F*v?
The expression for the maximum height of an object pushed straight up by a spring system.
h=0.5kx2/mg
The expression for the angle between the work done on an object and the displacement of the object.
theta=cos-1(W/Fd)