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Solve the Problem h+vt4.9t2\mathrm{h}+\mathrm{vt}-4.9 \mathrm{t}^{2} , Where h\mathrm{h} Is the Height in Meters from Which the Launch Occurs

Question 325

Multiple Choice

Solve the problem.
-An object's altitude, in meters, is given by the polynomial h+vt4.9t2\mathrm{h}+\mathrm{vt}-4.9 \mathrm{t}^{2} , where h\mathrm{h} is the height in meters from which the launch occurs, v\mathrm{v} is the initial upward speed in meters per second, and tt is the number of seconds for which the rocket is airborne. A pebble is shot upward from the top of a building 191 meters tall. If the initial speed is 35 meters per second, how high above the ground will the pebble be after 2 seconds? Round results to the nearest tenth of a meter.


A) 397.4 meters
B) 280.6 meters
C) 251.2 meters
D) 241.4 meters

Correct Answer:

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