Na podstawie wykresu mozna obliczyç mase kulki, która wynosi: a) 0,2 kg, b) 0,3 kg, c) 0,5 kg, d) 0,6 kg. prosze o pomoc < 3

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?