Science
Chapter 11 lesson 2
momentum
The combination of the mass and the speed of an object is momentum.EXAMPLE:If you throw a baseball and a tennis ball at the same speed the baseball would have more momentum because the baseball has more mass.
weightlessness
The state of being without detetable weight.EXAMPLE:If a skydiver stood on a scale inside a flying plane the scale would measure the skydivers wieght. If the door opend under the skydiver the scale would be 0.
Newtons 3 laws
Newtons 1st law
an object in motion tends to stay in motion. and an object at rest stays at rest unless something moves it. EXAMPLE:If u leave a book on the table it will be there the next day. EXAMPLE:A ball continues to roll until it hits something.
Newtons 2nd law
The acceleration of an object is dependent upon the force acting on the object and the mass of the object. EXAMPLE:A baseball bit with a bat flies farther than a bowling ball hit with a bat EXAMPLE:A baseball hit with a wooden bat flies farther than a baseball hit with a plastic bat.
Newtons 3rd law
Every action has an equal and opposite reaction. EXAMPLE:A balloon flies forward when air escapes. EXAMPLE:If two ice skaters glide into eacthother at full speed they will bounce off eachother and go the other way.