If a ball is thrown straight up into the air with an initial velocity of 45 ft/s, its height in feet after seconds is given by y=−. find the average velocity for the time period begining when =1 and lasting (i) 0.1 seconds equation editorequation editor (ii) 0.01 seconds equation editorequation editor (iii) 0.001 seconds equation editorequation editor finally based on the above results, guess what the instantaneous velocity of the ball is when =1.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?

Global climatic patterns are changing because of the melting of polar ice caps. the melting of polar ice caps is an example of the interaction between the atmosphere and cryosphere cryosphere and geosphere hydrosphere and geosphere biosphere and cryosphere