They have similar growth trajectories
Displacement is the answer
You can download answer here
tinyurl.com/wpazsebu
Answer:
f=ma.......m=f/a......m=20kg
Answer: The surface of the pad pushes the rocket up while gravity tries to pull it down. As the engines are ignited, the thrust from the rocket unbalances the forces, and the rocket travels upward. Later, when the rocket runs out of fuel, it slows down, stops at the highest point of its flight, then falls back to Earth.