Scientists estimate that a certain meteorite had a mass of about 1.4 10^8 kg (around 150,000 tons) and was traveling at nearly 12 km/s when it struck the earth. About how long would it take a standard coal fired power plant which generates about 1 billion joules per second to generate the same amount of kinetic energy as the meteorite when it hit the ground?

3 years
12 days
7.6 years
116 days

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: