A spelunker is exploring a cave and follows a passage 18 m west, then 21 m 50° north of east, then 28 m 30° south of east. Determine the resultant vector to establish the distance and direction she is from the starting point. (Draw the vector diagram at scale).

Abearing is designed to a reduce friction b. support a load c. guide moving parts such as wheels, shafts and pivots d. all of the above

Could someone me find the answer to this problem.

Steelhead trout migrate up stream to spawn. occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b. leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?