period 2 - Forces Review

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

Define force.

Back

A push or pull on an object resulting from the object's interaction with another object.

Front

What is an action-reaction pair?

Back

A pair of forces acting on two different objects that are equal in magnitude and opposite in direction.

Front

What happens when you push against a wall?

Back

You exert a force on the wall, and the wall exerts an equal and opposite force back on you.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between them.

Front

True or False: Forces can exist without contact between objects.

Back

True, as in the case of gravitational forces.

Front

What is the relationship between mass and force according to Newton's Second Law?

Back

Force equals mass times acceleration (F = ma).

Front

What is friction?

Back

A force that opposes the motion of an object in contact with a surface.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object; it remains at rest or continues to move at a constant velocity.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate, changing its velocity.