A 1.0-kilogram mass changes speed from 2.0 meters per second to 5.0 meters per second. The change in the object's momentum is

Answer 1

Momentum for a moving object is simply defined as the mass times the velocity, or m*v

So, the initial momentum is 1 kg * 2 m/s = 2 kg*m/s

The final momentum is 1 kg * 5 m/s = 5 kg*m/s

Therefore, the change in the object's momentum is 3 kg*m/s, because that is how much the momentum increases between the two times. I hope this helps!