Show:
Types of Energy
Kinetic Energy
Potential Energy
gravitational potential energy
Mass
100

Energy carried by electricity.

What is electrical energy?

100
What is the KE of a 24 kg mass moving at 2 m/s?
What is 48 j
100
How much potential energy is present in an 88kg marathon runner after she has crossed the finish line at the top of a 215m high hill?
What is 185416 J
100
A 35 kg mass is lifted to a height of 4 m. What is the gravitational potential energy?
What is 1372 j
100
A motorbike has 4500 j of KE and is traveling at 15 m/s. What is its mass?
What is 45 Kg
200

Energy an object has due to its motion, position or condition.

What is mechanical energy?

200
A ball weighs 2.45 N and is thrown so that it has a velocity of 12 m/s. What is the kinetic energy?
What is 18 j
200
A 19 kg ball flies 10m into the air. Calculate it's potential energy.
What is 1862 J
200
A German Shepherd with a mass of 35 kg is lifted to a height of 4 m. What is its gravitational potential energy?
What is 1372 J
200
A rock has kinetic energy of 110 j and is traveling at a velocity of 3 m/s. What is the mass of the object?
What is 24.44 kg
300

Energy formed when an atom splits apart or when two atoms join to form one.

What is nuclear energy?

300
What is the kinetic energy of a 56 kg mass moving with a velocity of 3 m/s?
What is 252 j
300
What is the potential energy of an 800kg horse which has climbed a distance of 1600m?
What is 12544000 J
300
When does something have gravitational potential energy?
What is when it is above the ground
300
What is the mass of a falling rock if it produces a force of 147 N?
What is 15
400

Energy of the movement of atoms and molecules.

What is thermal energy?

400
A bike is travelling at a speed of 14 m/s. The mass of the bike is 25 kg. What is the weight of the bike? What is the kinetic energy of the bike?
What is Weight = 245 N KE = 2450 j
400
A dog weighing 19 N is sitting on a couch that is 1.5m high. Calculate the potential energy of the dog.
What is 28.5 J
400
A weight lifter raises a steel bar of 25kg through a height of 1.8m. If g=10n/kg calculate the change to the gravitational potential energy.
What is Gravitational potential energy(GPE) = mass x Gravitational field strength(GFS) X Height. GPE= 25kg x 10n/kg x 1.8m = 450J
400
What is the mass of a truck if it produces a force of 14,000 N while accelerating at a rate of 5 m/s/s?
What is 2,800
500

Energy stored in the way atoms are connected to each other.

What is chemical energy?

500
A 10 kg mass is lifted to 2 m. What is its weight? What is its potential energy? How much work is being done? (Hint: The potential energy and work being done is the same)
What is Weight = 98 N KE = 196 j
500
How much potential energy is present in a 13 kg ball resting at the top of a 200m high cliff?
What is 25480 J
500

The weightlifter lowers the bar (25kg) by 0.3m. How much will the gravitational potential energy change by? Q2

What is GPE= Mass x GFS x Height GPE=25x10x1.5 = 375 GPE= 450-375 =450-375 = 75J

500
During a softball game, a softball is struck by a bat and has an acceleration of 1,500 m/s/s. If the net force exerted on the softball by the bat is 300 N, what is the softball's mass?
What is 0.2