anonymous one year ago If a ball dropped from a tower reaches the ground after 3.5 seconds, what is the height of the tower? Given: g = -9.8 meters/second2 a.) 56 meters b.)60.03 meters c.)62.08 meters d.)62.50 meters

1. anonymous

it is b

2. zephyr141

$d=v_0t+\frac{ 1 }{ 2 }at^2$

3. anonymous

$s=\frac{1}{2}g t^2$ Your answer will come in negative of course due to negative value of g that is taken, it simply means that the displacement is in the same direction as the acceleration, it's magnitude you can take as $|s|=\frac{1}{2}t^2|g|$