The surfaces between a 7 kg block, the 23 kg wedge and between the 23 kg wedge and the horizontal plane are smooth (without friction). the acceleration of gravity is 9.8 m/s 2 . a block is released on the inclined plane (top side of the wedge). 7 kg 29◦ 23 kg 9 f .8 m /s^2. what is the force f which must be exerted on the 23 kg block in order that the 7 kg block does not move up or down the plane? answer in units of n.

The answer is a 0.64 volts

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.