Aliya is rolling along on her 4.0-kg long board with a

Last updated: 7/5/2022

Aliya is rolling along on her 4.0-kg long board with a constant speed of 3.0 m/s when she jumps off the back and continues forward with a velocity of 2.0 m/s relative to the ground. This causes the long board to go flying forward with a speed of 15.5 m/s relative to the ground. What is Aliya's mass?