In a common but dangerous prank, a chair is pulled away as a personis moving downward to sit on it, causing the victim to land hard onthe floor. Suppose the victim falls by 0.50 m, the mass that moves downward is 70 kg, and the collision on the floor lasts 0.082 s. what are the magnitude of the a) impulse and b) the averageacting on the the victim from the floor during collision?