1. A rocket in space (meaning air friction is non-existent) is burning its engines which creates a constant unbalanced forward force on the rocket. This constant force is applied to the rocket as long as there is fuel to burn. 

a. Describe the rocket's motion. What will happen to the rocket's speed? 

b. Which of Newton's laws apply to this situation and why? 

c. When the rocket runs out of fuel, what happens to its speed? 

d. Which of Newton's laws apply to the new situation and why?