WEP 1
A force acting on an object that causes a displacement
What is work?
The equation for Power.
What is work divided by time?
Energy because the object is moving.
What is kinetic energy?
Energy that is stored or due to position.
What is potential energy?
The ability to produce a change to itself or the environment.
What is energy?
The units for work.
What is a Joule (J)?
The units used to measure Power.
What is the Watt (W)? Or J/s?
The equation used for calculating kinetic energy.
What is 1/2 * m * v^2?
The equation used to calculate gravitational potential energy.
What is mgh?
The units for all types of energy.
What is Joules (J)?
The equation used when solving for work.
What is force times displacement?
This quantity is defined as the rate at which work is done.
What is Power?
When kinetic energy is at its maximum value, the object is where?
What is its lowest point?
The equation to calculate the potential energy in springs?
What is 1/2 * k * x^2?
The amount of energy in a closed system that can change form, but the total amount of energy remains constant.
What is conservation of energy?
This type of work acts in the opposite direction of motion.
What is negative work?
We typically measure Power in Watts, the British however use this unit to describe Power.
What is horsepower? 1 hp = 750 Hp
Calculate the kinetic energy of a 17 kg object moving at 5 m/s.
What is 212.5 J?
Calculate the potential energy of a 5.2 kg box held 5.8 m above the ground.
What is 301.6 J?
Describe if the objects KE, PE, and TME increase, decrease or remain the same.
A marble begins at an elevated position on top of a ruler and rolls to the bottom of the ruler.
What is PE decreases, KE increases, TME stays the same?
On a Force vs. Displacement graph, the area is
What is work done?
Another form of the Power equation that includes velocity.
What is Force times velocity?
Calculate the mass of an object moving at 4 m/s with 210 J of kinetic energy.
What is 26.25 J?
Calculate the elastic potential energy of a spring with a spring constant of 270 N/m that has been compressed 7 cm.
What is 0.66 J?
Describe if the objects KE, PE, and TME increase, decrease or remain the same.
A marble is rolling along a level table when it hits a note card and comes to a stop.
What is PE stays the same, KE decreases, TME decreases?