A Toy Rocket, of Mass 60 G, Achieves a Velocity

Multiple Choice

A toy rocket, of mass 60 g, achieves a velocity of 80 m/s after 3.0 s when fired straight up. What average thrust force does the rocket engine exert?

A) 3.3 N
B) 3.4 N
C) 1.2 N
D) 2.2 N
E) 1.6 N