Question

The formula for the height of a fallinis 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=-4.9f+k

If aq rock is droppped from a building that is 150 meters tall, what is the height of the rock 4 seconds after it was dropped?

F 71.6 meters
G 78.4 meters
H 130.4 meters
j 145.1 meters

Answer 1

h = -4.9t + k

h = -4.9(4) + 150

Can you do the calculations?

Answer 2

130.4