a man pulls a 10m of rope to raise a package 2m. The man applies a force of 250 N to lift a 1000 N package

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.