Objects in Motion and At Rest

Learn about... That nothing can start unless pushed and nothing can stop without being stopped.

Stop, Drop, and Roll
Sir Isaac Newton second law of science, an object in motion will continue in motion, and an object at rest will stay at rest until acted upon by a force, can be explained as a roller coaster at the top of a lift hill. Now if the force of gravity wasn't pulling on the roller coaster it would stay there, but since it is then, gravity the force, acted upon the object at rest, the roller coaster, which caused it to travel down the lift hill and be launched in to motion.

Explaination Nation
Another way to explain Newton's law is that if no force is effecting the object then it has to be in a antigravity chamber, becausse if the object is anywhere on earth it will experiance gravity. So that way it could remain at rest until acted upon by another force.

Stayin 'n' Motion
The other half of Newton's law, an object in motion will continue in motion with a constant speed, and in the same direction until acted upon by a force. If a roller coaster is traveling down a lift hill, and up the second hill, but then abruptly stops at the top of the second hill, then it didn't continue in motion at a constant speed, because it was acted upon by one of two forces.The first one friction plays its part by slowing down the roller coaster because of the metal wheels rubbing up against the track. The second force is acceleration if the coaster isn't going fast enough then it can't make it over the hill.

Science/Force and Motion

Standard 2: The student understands that the types of force that act on an object and the effect of that force can be described, measured and predicted (SC.C.2.3).

Objective 5: Learn that an object in motion will continue at a constant speed and in a straight line until acted upon by a force and that an object at rest will remain at rest until acted upon by a force.

Amusement Park Activity

Stop n' Go - Go to an amusement park and then look at how the roller coaster needs a big drop to get going but it needs breaks to stop.

The "Mean Streak" at
Cedar Point can reach
speeds up to 65 miles an hour.

Vocabulary

Newtons First Law
of Motion- Every body continues
in its state of rest or of
uniform speed in a straight line
unless it is compelled to
change that state by a net
force acting on it.

Links

Newton's Laws - an indepth site
about Newton's Laws

The Physics Classroom -
the basics of Newton's laws