Forces and Motion

Friday, September 27, 2013Mrs. HensleySedgefield Middle School

DO NOW!

In your scientific journal: unscramble the following science words.

1. Edspe2. Creferncee3. Meit4. Trime5. Nacestid6. Pragh

Check your work!

1. Speed2. Reference3. Time4. Metric5. Distance6. Graph

What does a reference point have to do with motion?

Reference Point

Things only appear to move relative to a reference point (object that appears to stay still)

How do you know something is moving?

Motion

Change in position over time.

How is position related to motion?

Position

Location of an object.

How do you calculate speed?

Calculate Speed

A car is traveling at a constant speed of 20 miles per hour. This means that in 1 hour the car travels 20 miles.

Write an equation to show the relationship between distance traveled, d, and time traveled, t.

In other words, how does distance change as a result of the amount of time traveled?

Complete the distances

t d 1 hour 20 miles

2 hours 3 hours 4 hours

Quick review!

Newton’s First Law of Motion

The first law describes inertia, the tendency of an object to remain in motion or stay at rest.

Newton’s Second Law of Motion

The second law explains the dynamics of unbalanced forces

Newton’s Third Law of Motion

The third law notes that for every action (force), there is an equal and opposite reaction.

Mythbusters, enjoy!

http://app.discoveryeducation.com/search?Ntt=mythbusters

Exit Ticket

In your science journal, please tell me your plans for this weekend.