1.a rock is thrown upward with an initial speed of 15 m/s on earth

a. Make a list of given quantities and quantities to find, labeled with units and appropriate algebraic signs (+,-)

b. what is the acceleration of the rock?

c. Calculate the rock’s height after 1 sec

d. Calculate the time required to reach an upward speed of 3 m/s

e. Calculate the time required to reach a downward speed of 5 m/s

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