An object dropped from a balloon descending at 4 m/s lands on the ground 10 seconds later. What was the altitude of the balloon at the moment the object was dropped?

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency