A 1 500-kg experimental rocket sled at rest on level frictionless rails is loaded with 55.0 kg of propellant. It exhausts the propellant in a 20-s "burn." The rocket moves at 155 m/s after the burn. What average force is experienced by the rocket during the burn?
a. 4.26E+2 N
b. 1.16E+4 N
c. 1.21E+4 N
d. 1.94E+2 N
e. 2.33E+5 N
b
Physics & Space Science
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