An object is thrown upward at a speed of 148 feet per second by a machine from a height of 20 feet off the ground. The height

Question

h
of the object after
t
seconds can be found using the equation
h
=
−
16
t
2
+
148
t
+
20


When will the height be 46 feet? (Note that there are TWO answers, one for moving up and one for moving down!)
Incorrect
seconds
Correct

Hint: Set
h
to 46 and solve for
t
.

When will the object reach the ground?
Incorrect
seconds

Answer 1

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