Unit 2--Changes in Force and Motion

Front

What happens to an object when balanced forces act on it?

Back

It stays still.

Front

What is true about a book sitting at rest on a chair?

Back

There are many forces acting on the book, but they balance each other out.

Front

How can you tell if a hiker has negative acceleration?

Back

His speed decreased.

Front

What is the SI unit for force?

Back

Newton.

Front

If a cart is being pulled with 7 Newtons of force to the left and 5 Newtons to the right, what will happen?

Back

The cart will move to the left.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

Define force.

Back

A push or pull on an object that can cause it to accelerate.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces result in a change in motion of an object.

Front

What is acceleration?

Back

The rate of change of velocity of an object.