30 Questions
What is the total mechanical energy of the car and truck after the head-on collision?
Zero
Which vehicle experiences the larger change in kinetic energy during the head-on collision?
Both experience the same change
What is true about momentum conservation in a perfectly inelastic collision?
Only momentum is conserved
After the object was lifted 2.2 m, what is the potential energy with respect to the floor?
2,200 J
What is the amount of work done to lift the 500 N object 2.2 m above the floor?
$2,200$ J
What is a measure of the capacity or ability to do work?
Energy
What is the relationship between the temperature of liquid water and ice?
The temperature of the liquid water is higher than the temperature of the ice.
At its maximum height, what is the kinetic energy of an apple thrown vertically upward with a mass of 50g and reaching 10m?
4.9 J
What is the kinetic energy of a hot-air balloon with a mass of 500 kg ascending at a constant rate of 1.50m/s?
Zero
How many joules of work does a 70 kg man do when walking up to the fourth floor of a building with a height of 16 m?
10,976 J
What is the man's rate of work in Watts if he climbs to the fourth floor in 25 seconds?
358 W
How can the man increase his power?
All of the above
Which form of energy cannot be created nor destroyed, only transformed or transferred?
Mechanical energy
Among wind, ocean waves, and falling raindrops, which one does not possess kinetic energy?
A bird resting on a tree branch
What is the main type of energy exhibited by a stretched or compressed spring?
Elastic potential energy
Which law of thermodynamics is utilized in the invention of a thermometer?
Law of Conservation of Energy
What concept explains why glass breaks faster when dropped on cement than on carpeted floors?
Free Fall
Which material would expand the most when heated?
Material with high coefficient of thermal expansion
What is the correct definition of Power?
The rate at which energy is transferred
What is Momentum the product of?
Force and mass
Which term describes the energy associated with the atoms and molecules of a system?
Heat
What is the amount of energy necessary to raise the temperature of 1 g of a substance by 1 oC?
Specific heat
Which Thermodynamics Law explains the discovery of the thermometer?
Zeroth Law
Which statement does NOT describe the thermal expansion of a substance?
Expansion occurs only in solids, not liquids or gases.
In the context of potential energy, which physical quantity is matched correctly with its unit?
Entropy - J/kg
Which scenario describes an elastic collision accurately?
Objects lose some kinetic energy during the collision.
Why is negative work considered impossible?
Negative work would imply a decrease in energy which violates the law of conservation of energy.
What does a material with a high coefficient of thermal expansion indicate?
It contracts significantly when heated.
When considering internal energy, how does a glass of water at 90°C compare to the ocean at 50°C?
The glass of water has greater internal energy due to its higher temperature.
Why is a constant volume process in a gas cylinder associated with negative work?
No volume change means no work done on or by the gas.
Test your knowledge on energy transformation and conservation with this quiz. Questions cover topics such as the conservation of energy, forms of energy, and examples of energy transformation. See how well you understand the principle that energy can neither be created nor destroyed, only transformed.
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