A ball A is thrown vertically upward from the top of a 21-m-high building with an initial velocity of 7 m/s.At the same instant another ball B is thrown upward from the ground with an initial velocity...

Extracted text: A ball A is thrown vertically upward from the top of a 21-m-high building with an initial velocity of 7 m/s.At the same instant another ball B is thrown upward from the ground with an initial velocity of 25 m/s Part B Determine the time at which they pass. Express your answer to three significant figures and include the appropriate units HA t D Value Units


Extracted text: A ball A is thrown vertically upward from the top of a 21-m-high building with an initial velocity of 7 m/s At the same instant another ball Bis thrown upward from the ground with an initial velocity of 25 m/s Part A Determine the height from the ground at which they pass. Express your answer to three significant figures and include the appropriate units. HA h =D Value Units