Big Idea 12 - 13 Forces and Changes in Motion

Front

What happens to an object moving at a constant speed when a balanced force is applied in the opposite direction?

Back

The object will slow down and eventually stop moving.

Front

What force causes an object to fall to the ground when dropped?

Back

Gravity.

Front

Which object would require the most force to move: a toy car, a sleeping cat, a science book, or a chair with a friend sitting in it?

Back

A chair with a friend sitting in it.

Front

What keeps a box from moving when you push it, even though you are applying force?

Back

The force of friction is opposing the force you exert.

Front

How can two bar magnets be arranged to repel each other?

Back

Place the same poles (north-north or south-south) facing each other.

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when one force is greater than the other, causing a change in the object's motion.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, commonly experienced as the force that pulls objects toward the Earth.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.