Force & Motion
Main Ideas
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-Gravity is a force.
-A push is a force.
-A pull is a force.
-A forces can change the motion of an
object. (Example: if you push someone on the swing, they
move.)
-Gravity is a force that pulls objects toward the Earth.
-A push moves objects away from you.
-A pull moves objects toward you.
-The bigger the force, the more the object moves. (Underdog!)
-The smaller the force, the less the object moves. (Baby push)
-Sometimes when you push or pull an object, it doesn't move. Like when you pull on a rope and your friend is holding onto the other end. This is because another force (your friend!) is acting on it.
-A push is a force.
-A pull is a force.
-A forces can change the motion of an
object. (Example: if you push someone on the swing, they
move.)
-Gravity is a force that pulls objects toward the Earth.
-A push moves objects away from you.
-A pull moves objects toward you.
-The bigger the force, the more the object moves. (Underdog!)
-The smaller the force, the less the object moves. (Baby push)
-Sometimes when you push or pull an object, it doesn't move. Like when you pull on a rope and your friend is holding onto the other end. This is because another force (your friend!) is acting on it.
Let's get back to motion.
-An object is "in motion," or moving, when its position is changing (like the soccer ball that WAS on the ground, but it now flying across the playground!).
-The speed of the object (...soccer ball) depends on how far it is travelling in a specific amount of time. If it is traveling 10 miles every second, that is super fast! But if it's traveling 1 inch every second... that is realllly slow.
-Objects can speed up, slow down, or change direction, but ONLY if a force acts on it! You can kick a rolling soccer ball and change it's direction AND speed it up, or I can jump in front of your kicked soccer ball and slow it down or stop it when it hits me.
-An object is "in motion," or moving, when its position is changing (like the soccer ball that WAS on the ground, but it now flying across the playground!).
-The speed of the object (...soccer ball) depends on how far it is travelling in a specific amount of time. If it is traveling 10 miles every second, that is super fast! But if it's traveling 1 inch every second... that is realllly slow.
-Objects can speed up, slow down, or change direction, but ONLY if a force acts on it! You can kick a rolling soccer ball and change it's direction AND speed it up, or I can jump in front of your kicked soccer ball and slow it down or stop it when it hits me.