Question1

A 93 kg lumberjack stands at one end of a 379 kg floating log. Both the log and the lumberjack are at rest firstly. If the lumberjack now trots toward the other end of the log with a speed of 2.7 m/s relative to the log, what is lumberjack's speed relative to the shore? Overlook friction between the log and the water.

Question2

A has a magnitude of 94.0 Newton's (N) and points due east. The force vector B has a magnitude of 131 N and points 77.0 ° north of east.

Find out the

(a) Magnitude and (b) direction of A - B. (Give the direction as a positive angle with respect to due east).

Find out the

(c) Magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).