Acceleration is caused by a force acting on a mass.

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

An object at rest will _______ if no outside forces are applied.

The measure of how hard it is to stop a moving object

Friction is a force that acts in an ___________ direction of movement.

Which force produces a change in motion?

When a heavy football player and a light one run into each other, who exerts more force?

What is the tendency of an object to resist a change in motion?

An automobile you are riding in suddenly stops, but you continue to go forward.

When the force on a car is doubled, the acceleration is doubled.

A stationary bumper car is set in motion by the outside force of another bumper car colliding with it.

A magician pulls a table cloth from under a table of dishes.

The harder you hit a baseball, the faster it accelerates.

You push against a wall and the wall is pushing back on you.

The acceleration of a 4 kg bowling ball will be greater than the acceleration of a 6 kg bowling ball if the same force is applied to both.

As the fuel in a rocket ignites, the force of gas expansion and explosion pushes out the back of the rocket and pushes the rocket forward.

You are carrying a lunch tray when you bump into the edge of a table.  Although the tray did not tip, your milk falls off of the front of the tray.

When you paddle a kayak, you push the paddle backwards in the water and the kayak goes forward.

Determine the acceleration that results when a 12-N net force is applied to a 3-kg object. 

If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals

One object has twice as much mass as another object. The first object also has also twice as much...

What pulls a ball back to earth?

A(n) __________ is a push or pull.

If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?

A crumpled piece of paper hits the ground before a flat sheet of paper because

How does Newton’s third law explain how a rocket takes off?

What unit do we measure force in? 

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

What is the net force?

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N. What is the net force?

Any change in an objects speed or direction

A rocket with less ________ will have a greater acceleration.

A book weighs 4 N. When held at rest in your hands, the net force on the book is
 

A 20 kg bike accelerates at 10 m/s².  What was the net force?