Answer:
Step-by-step explanation:
The vertical displacement function is 
, where 
is measured in meters and 
in seconds. Ball hits the ground when 
. That is:
Whose roots can be found by using the General Formula for Second-Order Polynomials:
Solutions of this polynomial are:
Only the first root is physically consistent.
Answer:
Remember: minus a minus is a plus:
=11
Step-by-step explanation:
The digit in the tens place is 1.
The digit in the tenths place is 0.
true: y = 9 would give us a straight line because of two reasons:
a: we don’t know if x is rising
b: we don’t have an x in the equation
