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## Homework Statement

An object starts from rest w/ a constant acceleration of 8m/s^2 along straight line.

a)find the speed at the end of 5 sec.------40sec

b)the ave. spped for the sec interval------20m/s

A stone is thrown vertically upward w/ an initial velocity of 49m/s

a)How long does it take to reach the highest point-----5 sec

b)How far does the stone go---122.5m

c)How fast does the stone go----4.52s

A stone is dropped from a bridge w/c is 60m above seal level. a)find the time before it hits the water----12.24s

b)Speed upon hitting the water---34.29m/s

thanks