What would a 15 kg object\u2019s applied impulse be if it was moving at a speed of 10 m/s when its velocity changed to 20 m/s due to an impulse that was acted on it?

To find the impulse, or change in momentum, you will need to use the following equation: The change in momentum equals the object\u2019s mass times the change in velocity. Thus, 15 kg •\u00A0(20 m/s \u2013 10 m/s) = 150 kg*m/s.