4. Which of the following are needed for a value to be a vector? Select all that apply. direction O magnitude composition O angle​

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

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 are similarities and differences of reflection, refraction, diffraction and absorption?