[填空题]
A 95-kg fullback is running at 4m/s to the east and0jjmplrj;7 ;y(z +ewl is stopped in 0.75 s bo7i3jx 6 x,gwdz 4j(gfy a head-on tackle by a tackler running due west. Calculd( w6zgj4xio ,jx73fg ate
(a) the original momentum of the fullback kg*m/s
(b) the impulse exerted on the fullback kg*m/s
(c) the impulse exerted on the tackler, kg*m/s
(d) the average force exerted on the tackler. N