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

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