The first drawing shows three displacement vectors, A , B , and C , which are added in a tail-to-head fashion. The resultant vector is labeled R . Which of the following drawings shows the correct resultant vector for A B C + − ? (a) 1 (b) 2 (c) 3

What are the three ways that an object can accelerate

Idon’t quite understand this problem

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?