SIGN IN GRAB HANDOUTS PHONES UP GRAB CALCULATOR
SIGN IN GRAB HANDOUTS PHONES UP!!! GRAB CALCULATOR Free Fall
Starter Pg 18 -19 What is gravity? Is gravity the same everywhere?
Essential Questions What is an objects acceleration due to gravity? (notes & lab) How do you define free fall? (notes) How does mass effect free fall? (notes & video) What is frame of reference? (notes & video)
Free Fall – the motion of an object when only under the influence of gravity.
Free Fall The lines created on the position vs time graphs from the lab can be described as A curved line on a position vs time graph means that the object is CURVED. ACCELERATING The accepted value of the acceleration produced by gravity is 9. 8 m/s 2
Free Fall In 1590, Galileo Galilei allegedly dropped 2 balls of different masses from the Leaning Tower of Pisa and noted that they hit the ground at the same time. In reality, this does not always happen because of air resistance.
Free Fall NASA feather and hammer
Free Fall Astronauts of Apollo 11 dropped a hammer and a feather on the moon (where there is no air), proving Galileo correct that objects of different masses fall with equal acceleration
Equations
Video Frame of Reference Video
Vocab Frame of Reference: a method of describing the position, velocity and acceleration of an object usually from a specific vantage point.
Starter pg 18 -19 What is an objects acceleration due to gravity? How do you define free fall? How does mass effect free fall? What is frame of reference? Frame of Reference Video
A person jumps into the air. The person is in the air for a total of 10 seconds. How long did it take for the person to reach their peak? What is the velocity at the peak?
Problem Solving Your sister drops your house keys from the second story window, which is a distance of 4. 3 m from you. What is the velocity of the keys when you catch them?
Problem Solving A stone is dropped into a deep well and is heard to hit the water 3. 41 s after being dropped. Determine the depth of the well.
Free Fall Suppose the free-fall ride seen here starts from the top at rest and is in free fall for 1. 5 s. What would be its velocity at the end of that time?
Free Fall How far do people on the ride fall during this time?
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