Grade 12 Physics: Potential Energy Worksheet
Explore concepts of gravitational potential energy, elastic potential energy, and electrical potential energy with this comprehensive Grade 12 physics worksheet.
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Grade 12 Physics: Potential Energy
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Read each question carefully and provide clear, concise answers. Show all your work for calculation-based problems. Use proper units and significant figures.
1. Which of the following best defines gravitational potential energy?
Energy possessed by an object due to its motion.
Energy stored in an object due to its position in a gravitational field.
Energy stored in a stretched or compressed elastic material.
Energy associated with electric charges.
2. A spring has a spring constant of 200 N/m. How much elastic potential energy is stored in the spring if it is stretched by 0.15 meters?
2.25 J
4.5 J
9.0 J
1.125 J
1. Gravitational potential energy is directly proportional to an object's mass, the acceleration due to gravity, and its .
2. The SI unit for energy, including potential energy, is the .
3. Elastic potential energy is represented by the formula PE_elastic = 1/2 kx², where 'k' is the and 'x' is the displacement.
1. A 5.0 kg object is raised to a height of 10 meters above the ground. Calculate its gravitational potential energy. (Assume g = 9.8 m/s²)
2. Explain the difference between gravitational potential energy and elastic potential energy, providing an example for each.
1. Potential energy can be negative.
True
False
2. The work done to lift an object is equal to the change in its gravitational potential energy.
True
False
Match the type of potential energy with its primary characteristic.
1. Gravitational Potential Energy
a. Due to position in an electric field
2. Elastic Potential Energy
b. Due to deformation of a material
3. Electrical Potential Energy
c. Due to height in a gravitational field
A roller coaster car with a mass of 500 kg starts from rest at the top of a hill, 40 meters high. Assuming no friction, calculate:
a) The gravitational potential energy of the car at the top of the hill.
b) The speed of the car at the bottom of the hill. (Hint: Conservation of Energy)
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