Answer:
Step-by-step explanation:
we know that
the formula to calculate the distance between two points is equal to
we have
(4,2) and (7,8)
substitute the values in the formula
5
no
sdfghgfdsadfghjgftdrsewdfghgfdsdfgdsfghj
h=-5t²+135
when t=3 s
h=-5(3)²+135=-45+135=90 m