[填空题]
A person going for a mrfz3h0 eehm 2yp:p04 evf:+3 xwyx-mporn,p e)pc59n kbqxjxgh 4z4:*2 q:ykcoh ing jog on the deck of a cruise ship is running toward the bow (front) of the ship at ge 2p4j*:) x4c 5 b9phqxqk,zh:kc yon 2.2 $\mathrm{~m} / \mathrm{s}$ while the ship is moving ahead at 7.5 $\mathrm{~m} / \mathrm{s}$ . What is the velocity of the jogger relative to the water? m/s
Later, the jogger is moving toward the stern (rear) of the ship. What is the jogger's velocity relative to the water now? m/s
