A roller coaster car moves 200 ft horizontally and then rises 135 ft at an angle of 30° bove the horizontal. It then travels 135 ft at an angle of 40° downward. What is its displacement from its starting point? Use graphical techniques. (Do this on paper. Your instructor may ask you to turn in this work.)

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.