What is potential energy?

• The energy stored in an object due to its position or condition.

• The energy an object has due to its motion.

• The energy produced by an electrical current.

• The energy that is lost when an object stops moving.

What is kinetic energy?

• The energy stored in an object due to its position or condition.

• The energy an object has due to its motion.

• The energy produced by an electrical current.

• The energy that is lost when an object stops moving.

What is mechanical energy?

• The sum of potential and kinetic energy in a system.

• The energy produced by heat and temperature changes.

• The energy stored in chemical bonds.

• The energy that travels in the form of electromagnetic waves.

What is thermal energy?

• The total kinetic energy of particles in a substance due to their motion.

• A measure of the average kinetic energy of the particles in a substance.

• The energy produced only by the Sun.

• The energy required to change the state of matter.

What is temperature?

• The total kinetic energy of particles in a substance due to their motion.

• A measure of the average kinetic energy of the particles in a substance.

• The energy produced only by the Sun.

• The energy required to change the state of matter.

In the blank page, please answer the next exercise. Copy the data, write the procedure and don’t forget the result with units. If there’s is no procedure, the question will be consider incorrect.

A box is placed on a shelf that is 4 meters above the ground, and has a potential energy of 65.5 J. Consider g = 9.81 m/s². Calculate the mass of the box.

• 1.67 kg

• 2.14 kg

• 1.58 kg

• 2.26 kg

In the blank page, please answer the next exercise. Copy the data, write the procedure and don’t forget the result with units. If there’s is no procedure, the question will be consider incorrect.

A 3 kg ball is rolling with a velocity of 4 m/s. What is its kinetic energy?

• 24 J

• 6 J

• 3.5 J

• 15 J

In the blank page, please answer the next exercise. Copy the data, write the procedure and don’t forget the result with units. If there’s is no procedure, the question will be consider incorrect.

A car with a mass of 650 kg is moving at an unknown speed. It is at a height of 10 m above the ground, and its total mechanical energy is 84,000 J. Find the car's velocity.

• 7.89 m/s

• 10.76 m/s

• 124.52 m/s

• 115.8 m/s

In the blank page, please answer the next exercise. Copy the data, write the procedure and don’t forget the result with units. If there’s is no procedure, the question will be consider incorrect.

Convert 289 °C into °F

• 552.2 °F

• 142.78 °F

• 16 °F

• 322.8 °F

In the blank page, please answer the next exercise. Copy the data, write the procedure and don’t forget the result with units. If there’s is no procedure, the question will be consider incorrect.

Convert 15 °F into °C

• -9.44 °C

• 59 °C

• 84.6 °C

• -26.11 °C