8th Grade Science AAP Study Tools

Front

What explains why objects resist changes in their state of motion?

Back

inertia

Front

A dictionary weighing 15 Newtons is placed on a desk. What is the force that the desk exerts on the dictionary?

Back

15 Newtons

Front

If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?

Back

150 N

Front

Which law? Acceleration is caused by a force acting on a mass.

Back

Newton's Second Law (F=ma)

Front

Which law? Forces always act in equal and opposite pairs.

Back

Newton's Third Law

Front

If you increase the force on an object, what happens to its acceleration?

Back

Acceleration increases

Front

What is Newton's First Law?

Back

An object at rest stays at rest, an object in motion stays in motion unless acted on by an outside force.

Front

How will an an object in motion travel as long as the net forces acting on it are zero?

Back

At a constant speed and in a straight line

Front

What force acts against motion?

Back

Friction

Front

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron?

Back

Both need to same force (Newton's Second Law - F=ma)