Download presentation

1
**Newton’s Laws of Motion**

2
1st Law of Motion An object at rest will stay at rest and an object in motion will stay in motion (in the same direction and at a constant speed) UNLESS an unbalanced force is applied.

3
Examples Can you explain these using the 1st Law of Motion?

4
**1st Law More simply stated:**

If they are moving, they want to stay moving. If they are still, they want to stay still. The only way to change what they are doing is to apply a force.

5
Law of Inertia Objects are lazy – they do not want to stop what they are doing. What can we call this “laziness?” Inertia Inertia is a measure of it’s resistance to change. The more resistant, the more inertia Newtons’ First Law is also called the

6
**2nd Law of Motion Usually stated as an equation: F = ma**

What does this mean? And don’t say force equals mass times acceleration. Anyone can say that, but do you really understand what it means? What if I restated the equation?

7
**Newton’s 2nd Law Explained**

It means the acceleration of an object depends on two things – the mass of the object and the amount of force you apply to change its motion. Let’s look at this relationship.

8
**Let’s Look Mathematically**

If I double the numerator, what happens? = = 8 When one variable increases, another variable increases the same amount. This is called a direct proportion Which 2 variables are directly proportional? What does that mean? But this is science class!

9
Math and Science What happens when I increase the denominator? Let’s try! 4 = = 4 8 This is called an indirect proportion, or inverse proportion Which 2 variables are inversely proportional? What does that mean?

10
Newton’s 2nd Law Look at the equation. Think of the previous fractions. Can you explain what it means now?

11
2nd Law of Motion The greater the applied force, the faster the object will move (acceleration). The more mass an object has, the more force you need to change it’s motion

12
3rd Law of Motion For every action, there is an equal and opposite action.

13
**Let’s Review Newton Once moving at a steady speed In a straight line**

It will continue moving At a steady speed Once standing still It will stay still

14
**Newton It accelerates in the direction that you push it**

If you push twice as hard, it accelerates twice as much If it has twice the mass It accelerates half as much

15
Newton If you push on it It pushes on you

16
**Check out these videos http://www.fmalive.com/**

17
Questions?

Similar presentations

Presentation is loading. Please wait....

OK

Newton’s 1st Law of Motion

Newton’s 1st Law of Motion

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google

Ppt on census 2001 people Ppt on revolt of 1857 pictures Ppt on statistics and probability calculator Ppt on hindu religion origin Ppt on order of operations Ppt on ready mix concrete plant Ppt on working of ac generator Ppt on principles of peace building institute Jit ppt on manufacturing business Ppt on power line communication modem