8th Gr. Unit 3 (1-5)

Front

What are the two vertical forces acting on an object at rest on a table?

Back

The object's weight pushing downward and the upward contact force of the table.

Front

What is the effect of two opposing forces of equal magnitude on an object?

Back

The object does not move at all.

Front

What is the role of gravity in the motion of objects on Earth?

Back

Gravity pulls objects downward toward the center of the Earth.

Front

What happens when two forces act in the same direction on an object?

Back

The forces combine to produce a greater force in that direction.

Front

What is a magnetic force?

Back

A force that attracts or repels objects due to their magnetic properties.

Front

What components make up a magnetic cannon system?

Back

The rulers, the steel ball bearings, table, and the magnet.

Front

How does an object move when two forces counteract each other?

Back

The object will move in the direction of the greater magnitude.

Front

What is contact force?

Back

A force that acts at the point of contact between two objects.

Front

What is the definition of weight?

Back

The force exerted by gravity on an object, calculated as mass times the acceleration due to gravity.

Front

What is equilibrium in physics?

Back

A state where all forces acting on an object are balanced, resulting in no net force.