The formula for the height of a falling object is shown below, where h is the height of the object in meters, t is the time in seconds, and k is the height, in meters, from which the object began its fall.
h = –4.9t² + k
If a rock is dropped from a building that is 150 meters tall, what is the height of the rock 4 seconds after it was dropped?
6 answers
h = -4.9(4)^2 + 150 = ?
is it 145.1
not it is 71.6 right
Right!
if an object is dropped from a great height, its speed "v" varies directly with the time "t" it has been falling . a rock dropped over the edge of a canyon is traveling 39.2 m/s after 4 sec.
1. Express v as a function of t.
2. what is the speed of the rock after 9 seconds
1. Express v as a function of t.
2. what is the speed of the rock after 9 seconds
Falling Object An object is dropped from a
height of 576 feet. How long does it take for
the object to reach the ground? Assume there
is no air resistance
height of 576 feet. How long does it take for
the object to reach the ground? Assume there
is no air resistance