# Zora Tucker, 2nd Law

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#### Storyboard Description

Newton's First Law states that an object in motion will stay in motion and an object at rest will stay at rest. This means an object will not change it's speed or direction unless something external like a force reacts on it. For example, If you slide a hockey puck on ice, eventually it will stop, because of friction on the ice but it will also stop if it hits something, like a player’s stick. Newton's Second Law states that more force equals more acceleration. If an object is heavier or has more mass it will require more force to move it. It's written mathematically as Force=Mass*Acceleration. For example, if you use the same force to push a truck and push a car, the car will have more acceleration than the truck because the car has less mass. Newton's Third Law states that for every action there is an equal and opposite reaction. For example, when you dive off of a diving board, you push down on the springboard. The board springs back and forces you into the air.

#### Storyboard Text

• Yesterday﻿, my mom gave me a long list of groceries to go buy from the store.
• Yesterday Afternoon﻿
• ﻿This shopping cart is really hard to push!
• ﻿This morning, I realized I had forgotten some things for breakfast so I went back to the store.
• Today
• I can't believe I only forgot two items!﻿
• Today I noticed that the cart was a lot easier to push than it was yesterday.﻿
• This is an example of Newton's Second Law.﻿ It was easier to push the shopping cart today because it had less mass. I had to give the cart more force for it to move yesterday
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