Understanding Gravity and Forces in Physics
Gravity is a natural force that pulls objects towards the Earth's center, affecting how they fall based on mass. This presentation explores what gravity is, the impact of forces on objects, and how mass influences the effect of gravity. It demonstrates how objects like a bouncy ball and a marble fall differently due to their mass and highlights the need for force to overcome gravity in situations like throwing a bean bag versus a basketball. The content also mentions a resource for educational powerpoints on teaching physics concepts.
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Gravity What is it? http://www.fi.edu/piec es/cych/apollo%2010 /story/hoi/ball3.html http://www.fi.edu/piec es/cych/apollo 10/story/hoi/ball.html
Gravityis A natural force that pulls all objects toward the center of the earth.
WHAT IS A FORCE? A pull or a push on an object
Which do you think would fall first? A bouncyball Or a marble Try It!
They fall at the same rate of speed, but the marble has more mass (weight) and so gravity makes it fall harder! Gravity has a stronger force on things with more mass!
It takes a force to overcome gravity! Throw a bean bag in the air and then Throw a basketball in the air. Which one was harder to throw?
You had to use more force to throw the basketball because it has more mass (weight)
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