PS Chapter 3, section 2

Front

What is the net force on a ball thrown on Earth when you are no longer touching it?

Back

The net force is down and backward.

Front

What is the reaction force when an archer releases the bowstring and the arrow flies forward?

Back

The arrow flying forward is the reaction force.

Front

What is the force of attraction between all matter?

Back

Gravity.

Front

What are the units for velocity?

Back

m/sec.

Front

What law is required to compare two pictures in terms of motion?

Back

Newton's 2nd Law.

Front

What is inertia?

Back

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

Front

What is friction?

Back

Friction is the force that opposes the motion of an object.

Front

What is net force?

Back

Net force is the total force acting on an object after all the forces are combined.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies toward each other.

Front

What is Newton's 1st 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.