If a 1150 kg artillery shell is fired from a 165000 kg battleship with an acceleration of 16.9 m/s216.9~\text{m/s}^216.9 m/s2, then what is the recoil acceleration of the ship? (for this calculation, neglect the force of the water on the ship)

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain