Newton Laws of Motion #2

Front

What unit do we measure force in?

Back

Newtons

Front

According to Newton's 3rd Law, reactions always go in the ___ direction of the action.

Back

opposite

Front

What is a balanced force?

Back

A balanced force has no net force.

Front

What kind(s) of objects have inertia?

Back

All objects with mass.

Front

What prevents a book resting on a table from accelerating downward at 9.8 m/sec² when the force of gravity pulls down on it with 20 newtons?

Back

The table presses back up on the book with an equal and opposite force of 20 newtons.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass (Weight = mass × gravity).

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces result in a net force that causes an object to accelerate.