Jane is a science student at the University of Massachusetts Boston and is doing a physics experiment. From the top of the Integrated Sciences Complex building, Jane drops a ball of mass m on the spring with spring constant k mounted vertically on the ground. If the maximum compression in the spring is y, find the height from the top of the spring in the uncompressed state to the point from where the ball was dropped initially.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

One answer could be erosion

Ansa new gas is observed in the form of bubbles;