[填空题]
A person jumps from a fourth-story window 15.j :q -s xh+ldp0 sy m/exy,i1es)2e/no0 m above a firefw+v8 vj 7utugovhl 9l.(7, enrighter’s safety net. The survivor stretches the net 1.8 voe( ,tjugnl.w+77h uv 9lrv0 m before coming to rest, Fig. 2–37.
(a) What was the average deceleration experienced by the survivor when she was slowed to rest by the net? $m/s^2$
(b) What would you do to make it “safer” (that is, to generate a smaller deceleration): would you stiffen or loosen the net? Explain.
