Inertia, Mass and Newton's First Law
when all individual forces acting upon an object are BALANCED, it is the natural tendency of an object to:
-Maintain its state of motion -Keep its velocity constant
Inertia refers to _____ . Choose all that apply.
-the tendency of moving objects to remain in motion. -the tendency of stationary objects to remain at rest.
Different forces are applied to objects of varying mass. The resulting accelerations are shown. Rank these objects...
3kg 4kg 5kg 10kg
The velocities and masses of four objects are shown. Rank these objects in order...
3kg 4kg 5kg 10kg
Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity.
False
Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a greater speed it will have a greater inertia. Tosh argues that inertia does not depend upon speed, but rather upon mass. Who do you agree with? Explain why.
Tosh
Suppose that an astronaut throws a rock in outer space far from the influences of gravity or air resistance.
continue in motion with the same speed and direction.
An object will not have any inertia if it is _____ .
nonsense! All objects have inertia.
A sled slides down a hill, reaches the level surface and eventually comes to a stop. The fact that the sled ultimately comes to a stop can best be explained by _______ .
the presence of an unbalanced force (e.g. friction) can cause a moving object to stop.
Newton's first law (the law of inertia) applies _____ .
to both moving and nonmoving objects.
