In a game of football, a 94 kg player carries the ball and heads toward the opponent’s end zone with a
velocity of 6.0 m/s [W]. A linebacker delivers a vicious hit, causing the ball carrier to be knocked
backward with a velocity of 2.7 m/s [E]. Determine the impulse delivered to the ball carrier and the
force of the hit if it took the linebacker just 0.38 s to deliver the hit.

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants