physics chapter 6

A heaver object has a larger gravitational force action on it than a lighter object does. Therefore, according to Newton's second law, it will experience a greater acceleration toward the ground than the lighter

False

All forces on an object caused a change in the object's motion

False

Forces are really only pulls applied by one system on another

False

Sir Isaac Newton originated the concept of inertia

False

the value of G on the moon is smaller than on the earth because objects have smaller masses on the moon than on the earth

False

the sum of all forces on an object is called

the resultant force

All three laws of motion apply in every instance where a force is exerted on a system

true

It is possible for a scientific law to not hold true in every case where it is tested

true

balanced forces

when the sum of all simultaneous forces acting on an objects equals zero

electromagnetic force

* 4 fundamental components * both static and moving

A hockey puck slides across the ice with a constant velocity. does this mean that there is no force on a system of constant mass will have what result?

Doubling the net force on a system will double its acceleration

Which of the following statements would Newton disagree with and why A) An objects motion changes in responce to an unbalanced force. B) for every action, there is an equal or opposite reaction C) a force is always needed to maintain a constant velocity D) the acceleration of an object is proportional to its mass

Newton would disagree with choice C. A force is not required to maintain constant velocity of a system unless there is an opposing forces acting on the system

Every fundamental force is at work in a. flower vase sitting on a shelf

True

The " action" fours never ask on the same system as the " reaction" force

True

the " action" force never acts on the same system as the "reaction" force

True

force

an agent that causes change in motion of matter, or tends to do so

gravitational force

an attractive force that acts between any two objects

principal of inertia

an object at rest tends to stay at rest and an object in motion will continue in its current state of motion unless an outside agent acts on it

unbalanced forces

change in an objects state of motion

What force causes the transmission of light

electromagnetic force

Astronauts in the international Space station can use a standard laboratory balance when finding the mass of an object

false

Galileo referred an "agent" that causes a change in the state of motion of an object. What was this agent?

force

what common phenomenon likely accounts for the Greek natural philosophers observation that objects naturally tend to slow down and that heaver objects fall faster than lighter objects?

friction in many different forms tends to slow or retard the acceleration of moving objects

what did Galileo conclude about the natural tendency of any moving object?

tends to continue moving at the same speed unless acted upon by some outside agent