1. The problem statement, all variables and given/known data Before a collision, a 26 kg object is moving at +10 m/s. Find the impulse that acted on the object if, after the collision, it moved at the following velocities. a) +8.0 m/s b) -8.0 m/s 2. Relevant equations Impulse = change in momentum = mass * change in velocity = m * (vf - vi) 3. The attempt at a solution a) = 26 (+10 m/s - +8.0 m/s), impulse = 52? b) = 26 (+10 m/s - -8.0 m/s), impulse = 468?