What does Newton’s First Law say about an object when the net external force on it is $0$?
Question 2
What is inertia?
Question 3
A hockey puck sliding on smooth ice slows down only a little. According to Newton’s First Law, why does it eventually slow down instead of moving forever at the same speed?
Question 4
A book rests on a table. Which statement best describes the forces on the book?
Question 5
If the net external force on a moving cart is $0$, what happens to the cart’s velocity?
