To study the performance of a race car, a high-speed camera is positioned at point a. the camera is mounted on a mechanism which permits it to record the motion of the car as the car travels on straightaway bc. it took 0.5 s for the car to travel from the position θ = 60° to the position θ = 35°. knowing that b = 25 m, determine the average speed of the car during the 0.5-s interval.

Work = force × a. work b. energy c. distance d. momentum

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?

The ozone hole appears in antarctica during