Benda bermassa m, = 30 kg diletakkan di atas benda yang bermassa m = 40 kg. Kemudian kedua benda tersebut didorong vertikal ke atas dengan gaya sebesar 280 N. Jika besar percepatan gravitasi g = 10 m/s- maka tentukan besar percepatan kedua benda dan juga gaya aksi-reaksi (gaya kontak) antara benda m1, dan m2.

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