A Model Rocket with a Mass of 750 Grams Is

Multiple Choice

A model rocket with a mass of 750 grams is launched straight up. It achieves a speed of 25.0 m/s in 2.00 seconds. Ignoring any change in mass of the rocket due to expelled fuel, and neglecting air resistance, the magnitude of the average net force on the rocket is

A) 9.38 N.
B) 24.5 N.
C) 16.7 N.
D) 41.7 N.
E) 52.8 N.