SOLUTION: A projectile is fired from the ground with an upward speed of 245 m/s. After how many seconds will it return to the ground? Use the formula h = vt - 4.9t^2.
Algebra.Com
Question 318835: A projectile is fired from the ground with an upward speed of 245 m/s. After how many seconds will it return to the ground? Use the formula h = vt - 4.9t^2.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
A projectile is fired from the ground with an upward speed of 245 m/s. After how many seconds will it return to the ground? Use the formula h = vt - 4.9t^2.
.
From the problem:
v = 245 m/s
h = 0 (ground level is 0)
.
h = vt - 4.9t^2
0 = 245t - 4.9t^2
0 = t(245 - 4.9t)
.
Solving for t:
245 - 4.9t = 0
-4.9t = -245
t = -245/-4.9
t = 50 seconds
RELATED QUESTIONS
A projectile is fired from the ground with an upward speed of 245 m/s. After how many... (answered by Alan3354)
A projectile is fired from the ground with an upward speed of 245m/s. After how many... (answered by jim_thompson5910)
A projectile is fired from the ground with an upward speed of 245m/s. After how many... (answered by Targetweek)
A projectile is launched upward from the ground level with an initial speed of 98m/s.... (answered by venugopalramana,Nate)
A projectile is fired upward with an initial velocity of 588 m/sec. After how many... (answered by KMST)
use the formula h = rt - 4.9t2
a projectile is fired upward with an initial speed of... (answered by Fombitz)
a rocket is fired upward with an inital speed of 1960 m/s. after how many minutes does... (answered by 6894,Edwin McCravy)
A rocket is fired upward with an initial speed of 1960 m/s. After how many minutes does... (answered by manglu)
a rocket is fired with and initial speed of 1764m/s. After how many seconds will it hit... (answered by Fombitz)