Question detail
What is the primary factor that causes the kinetic energy of a projected object to decrease?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
- A. Increase in height
- B. Decrease in mass
- C. Increase in speed
- D. Decrease in gravitational force
Answer
Increase in height
Explanation
The correct option is "Increase in height". Increase in height is right because it directly matches Energy stores and systems: Describe energy-store changes when an object is projected upwards.. The other options are less suitable because they change the required Physics relationship, confuse the relevant energy store or use a distractor that does not answer the question.
Common mistake
Misunderstanding Energy Changes
Students often think that the energy store remains constant when an object is projected upwards.
Emphasize that as an object is projected upwards, kinetic energy is converted to gravitational potential energy, leading to a change in energy stores.
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