Flashcards on Free fall
Free Fall Explained: Your Guide to Physics Concepts & Terminal Velocity
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25 cards
Card 1
Question: What is free fall?
Answer: Free fall is a type of motion where an object moves solely under the influence of gravity, meaning gravitational force is the only force acting on it.
Card 2
Question: What are the idealized conditions for free fall?
Answer: In an idealized situation, free fall occurs in a vacuum, where there is no air or other medium to exert resistance.
Card 3
Question: In an idealized free fall, how do objects of different mass, shape, or size accelerate?
Answer: Under idealized conditions, all objects, regardless of their mass, shape, or size, accelerate downwards at the same constant rate.
Card 4
Question: Who famously explored the concept of free fall and challenged the Aristotelian view?
Answer: Galileo Galilei famously explored the concept of free fall.
Card 5
Question: What did Galileo's experiments on free fall demonstrate?
Answer: Galileo's experiments demonstrated that objects fall with a constant acceleration, challenging the view that heavier objects fall faster.
Card 6
Question: What is gravitational acceleration?
Answer: Gravitational acceleration is the constant acceleration experienced by objects in free fall, denoted by 'g'.
Card 7
Question: What is the approximate average value of 'g' near the Earth's surface?
Answer: Near the Earth's surface, the average value of 'g' is approximately 9.81 meters per second squared (m/s²).
Card 8
Question: What does the unit m/s² for gravitational acceleration indicate?
Answer: The unit m/s² indicates that for every second an object is in free fall, its downward velocity increases by 9.81 meters per second.
Card 9
Question: What assumption is made when using kinematic equations for free fall?
Answer: The kinematic equations for free fall assume negligible air resistance.
Card 10
Question: What is the kinematic equation for velocity-time in free fall, starting from rest?
Answer: v = g·t