Download presentation

Presentation is loading. Please wait.

Published byPeregrine Byrd Modified over 5 years ago

1
Lecture 11: Laws of motion

2
Newton’s 1 st Law: Inertia Matter resists motion If at rest, it will stay at rest If in motion, it will stay in motion Mass is a measure of inertia

3
Newton’s 2 nd Law An unbalanced force acts on objects equal to its mass and acceleration F = m X a F = force m = mass a = acceleration

4
Gravity All objects in the universe attract each other Gravity is a function of mass and distance More mass= more gravity More distance = less gravity

5
Weight and gravity The pull of gravity on Earth is 9.8m/s 2 Weight is mass X the pull of gravity (w=mg) Q: are weight and mass the same? Q: do we weigh the same on the moon as on earth?

6
Terminal velocity The maximum speed objects fall to earth is 200 mi/h or 320km/h How does the parachute slow the fall?

7
Newton’s 3 rd Law Forces act in pairs For every action force, there is an equal and opposite reaction force

8
Momentum = mass X velocity The greater the mass, the greater the momentum. Ex: semi trucks take longer to stop than cars. Q: will momentum be greater at more velocity?

9
Action and reaction force pairs

Similar presentations

© 2021 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