Question detail
Explain the changes in energy stores when a ball is thrown upwards and reaches its highest point.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
Explain the changes in energy stores when a ball is thrown upwards and reaches its highest point.
Answer
As the ball is thrown upwards, its kinetic energy decreases while its gravitational potential energy increases. At the highest point, the ball has maximum gravitational potential energy and minimum kinetic energy, as it momentarily stops before falling back down.
Explanation
This question assesses the ability to describe energy-store changes in a system, focusing on the relationship between kinetic and gravitational potential energy during the upward motion of an object.
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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