Dynamics

Which two ever present forces affect all motion on Earth?

Which of the following is NOT a force

Air resistance is usually so small that it can be ignored

Newtons law of action/reaction

The first person to write about the causes of motion was Galileo

Which of the following is the result of a field force?

Astronaut David Scott tested Aristotle's theory of gravity experimentally by using

An object falling through a fluid experiences no friction

Modern physics concerns all of the following except

Which object has the most inertia?

In which case are all the forces acting on a system balanced?

An external force is exerted from the inside of a system's boundaries

Forces are vectors because they cause objects to accelerate in proportion to their magnitude

Newton's law of inertia applies only to moving objects

The scientist who used ideas to formulate laws was Newton

unbalanced forces required to produce motion

force equals mass times acceleration

Galileo tested Aristotle's theory of gravity by actual experiments dealing with

A wrecking ball strikes a brick wall. Which of the following would increase the force of the ball?

The SI unit of force is the Newton

If two objects are dropped from the same height at the same time, the heavier object will always hit the ground first

inertia is the tendency of matter to resist a change in motion until acted on by an external force

Air resistance increases with increases

Free fall can take place in the earth's atmosphere

What is the unit of inertia

True free fall is not achievable in the earth's atmosphere

Who was the first person to write about the causes of motion

Which of the following is an example of a force?

The more mass an object possesses, the more inertia it possesses

Newton's third law applies to all objects regardless of their condition of motion

Air resistance is a form of

Which of the following are NOT directly proportional?

Which situation does NOT involve friction

Galileo developed equations governing how forces act

In true free fall, a flat sheet of paper would still fall somewhat slower than a crumpled sheet.

Galileo connected motion with the influence of forces

Why are hot air balloons are balanced?

Galileo disproved Aristotle's theory of gravity by a thought experiment dealing with

Which of the following is the result of a contact force?

If the gravitational forces of the earth and moon are balanced, is a spacecraft closer to the earth or the moon?