Tripoli Advanced Certification Technical Practice Test

Kinetic energy is determined by the formula KE = 1/2 mv², where "m" represents mass and "v" represents velocity. In this scenario, while we don't have specific values for the masses of Rockets A and B, we can assess their velocities to infer information about their kinetic energies.

Rocket A is descending at a velocity of 10 feet per second, and Rocket B is descending at a velocity of 20 feet per second. If we assume that both rockets have the same mass, we can directly compare their kinetic energies based on their velocities.

Calculating the kinetic energies for each rocket using the velocities provided:

- For Rocket A: KE_A = 1/2 m (10)² = 1/2 m (100) = 50m

- For Rocket B: KE_B = 1/2 m (20)² = 1/2 m (400) = 200m

By examining the results, it is clear that the kinetic energy of Rocket B, when compared to Rocket A, is four times greater (200m compared to 50m). Thus, Rocket B indeed has four times the kinetic energy of Rocket A, confirming that the choice stating that Rocket B has four