A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 12.0\,\text m12.0m12, point, 0, start text, m, end text with a vertical drop of 2.00\,\text m2.00m2, point, 00, start text, m, end text. We can ignore air resistance.
power out to power in less than 100%
the chart show the masses and velocities of two colliding objects that stick together after a collision.
according to the law of conservation of momentum, the momentum of the object after the collision is
kg • m/s.