A 1 500-Kg Experimental Rocket Sled at Rest on Level

question 59

Multiple Choice

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

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