A 2.0kg suitcase slides forward along the aisle of a train at 3.0m/s relative to the train. The train travels east at 10.0m/s relative to the ground. Determine the suitcase’s translational kinetic energy as measured by an observer standing on the ground.
a) 1.1×102J
b) 4.9×101J
c) 1.7×102J
d) 1.0×102J