An Unfueled 1 000-Kg Experimental Rocket Sled on Level Frictionless

question 22

Multiple Choice

An unfueled 1 000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of propellant.It exhausts the propellant in a 20-s "burn." If the rocket,initially at rest,moves at 160 m/s after the burn,what impulse is experienced by the rocket sled?

• A)1.1 × 10⁵ kg·m/s
• B)1.6 × 10⁵ kg·m/s
• C)1.5 × 10⁵ kg·m/s
• D)1.9 × 10⁵ kg·m/s

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