Particle moving with constant acceleration changes its velocity from 10 m/s to 20m/s while covering a distance of 130m. Find the acceleration of the particle.

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.