Force Review

The tendency of an object to resist a change in its state of motion is called the object's ______.

• incline
• straight line
• friction 
• inertia 

The ______of an object tends to make the object resist being set into motion.

• mass
• force
• motion
• unbalanced forces 

Without a force to stop or slow a coasting object, the object will coast forever in a ______ line. 

• blue
• red
• straight
• vertical 

_________ opposes the motion of one object moving past another. 

• friction 
• velocity
• unbalanced forces
• simple machines 

friction is a force that acts 

• in the same direction as the motion
• opposite to the direction of the motion
• opposite to the applied forces
• the same direction as the applied force

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

An object following a straight-line path at a constant speed 

• has zero acceleration
• has no forces acting on it
• has a net force acting in the direction of motion
• none of these

An object's velocity can be changed by changing its speed, its direction, or both.

• True
• False

A change in velocity over time is called ___________.

• speed
• force
• acceleration
• direction

The increasing speed of a falling object is caused by _____________.

• force
• mass
• speed
• gravity