You've Got Potential
It Figures
Powerful Vocabulary
It Works
Energize Me
Change It Up
100
This type of energy is associated with compressed springs, stretched rubber bands, and a rock on a cliff's edge.
What is potential energy?
100
This would be the amount of work done when 300 N of force is used to lift a dog 1.5 m.
What is 450 J?
100
This is the ability to change or cause change.
What is energy?
100
This is the amount of work done by a bulldozer holding a large mound of metal suspended above the ground at a height of 5 meters for 2 minutes.
What is 0 J or no work? If there is no movement over a distance, no work is done.
100
Mechanical energy is made up of these two types of energy.
What is potential and kinetic energy?
100
This would be the energy transformation associated with an electric fan.
What is electrical to mechanical (or kinetic)?
200
These two factors are used to determine kinetic energy.
What are mass and velocity? (1/2mv2)
200
This is the amount of work done against gravity when a 15 N crate is lifted through a height of 3 meters.
What is 45 joules?
200
This unit measures both energy and work.
What is a joule?
200
This is the definition of work.
What is force applied over a distance?
200
This would be the point at which the kinetic energy is highest.
What is Point C?
200
This would be the energy transformation associated with a battery powered heater.
What is chemical to heat (or thermal)?
300
This would be the height of a book with a mass of 4 kg and 200 joules of potential energy.
What is 5 meters?
200 J = 4kg x 10 m/s2 x ?
?=5 meters
300
A deer with a mass of 40 kg running at a speed of 8 m/s would have this amount of kinetic energy.
What is 1280 Joules?
20 (half of the mass) x 64 (speed squared) = 1280 joules
300
This is the rate at which work is done or energy is transferred.
What is power?
300
This is the amount of work performed by someone pushing a cart with 12 newtons of force for 7 meters.
What is 84 J?
300
This would be the point having the highest potential energy.
What is Point C?
300
The law of conservation of energy states that energy can not be _____________ or ________________, so the total amount of energy in any system stays constant.
What is created or destroyed?
400
This would be the gravitational potential energy of a person weighing 60 newtons standing on the roof of a 4-m tall ladder.
What is 240 Joules?
60 newtons (already mass x gravity) x 4 meters height=240 joules
400
A bowling ball needs to be lifted 3 meters to have 90 joules of potential energy. This would be the ball's mass.
What is 3 kg?
400
This is the number of watts in one horsepower (hp).
What is 746?
400
Two workers lift identical packages onto a loading dock using the same amount of force. Worker A lifts the package in 3 seconds. Worker B lifts the package in 1 second. This would be how their (A) work and (B) power compare.
A) The work performed by Worker A and Worker B would be equal (same force and same distance).
B.) The power of Worker B would be greater because the work was performed at a faster rate.
400
A cart weighing 12kg is moving at a velocity of 3 m/s. This would be the amount of kinetic energy possessed by the cart.
What is 54 Joules?
6 (half of mass) x 9 (velocity squared) = 54 Joules
400
Although energy can not be created or destroyed, it can be ___________________.
What is transformed?
500
A diver on a 10.0 meter diving board has a potential energy of 5000 J. This would be the mass of the diver.
What is 50 kg?
500
A Sherpa uses a force of 80N to move a load of equipment to a height of 20 meters in 100 seconds. This would be the amount of power used.
What is 16 watts?
500
A machine's maximum power rating is 200 W. What is the minimum time required for this machine to move 40 newtons a distance of 10 meters?
What is 2 seconds?
500
Moving an object to a higher shelf will increase this.
What is potential energy?
500
Starting from rest, a 5-kilogram block of wood slides a distance of three meters down a frictionless slope, as shown. The ramp is 2 meters high. This would be the approximate kinetic energy of the wooden block at the bottom of the slope.
What is 100 J?
(Start by finding the potential energy at the top. 5 x 10 x 2. Be sure to calculate with the HEIGHT of the ramp, not the length/distance. When this changes from potential to kinetic, the amount should be the same according the the law of conservation of energy.)
500
A certain fan is capable of using 50 J of electrical energy each minute, converting 35 J of it into kinetic energy of the fan. This would be the efficiency of the fan.
What is 70%?
35/50=.70 (70%)