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Oksi-84 [34.3K]
2 years ago
13

The height of a projectile that is thrown upward from ground level with an initial velocity of 98 meters per second can be model

ed by the equation h = −4.9t2 + 98t, where h is the height in meters and t is the elapsed time in seconds. Find the time it takes for the projectile to hit the ground.
10 seconds
20 seconds
15 seconds
5 seconds
Mathematics
1 answer:
Blababa [14]2 years ago
8 0

It is found that the time it takes for the projectile to hit the ground would be after 20 seconds.

<h3>When does the projectile hit the ground?</h3>

The projectile would hit the ground when its height h(t), is equal to zero.

The given function that models its height is given by:

h(t) = -4.9t^2 + 98t.

where h is the height in meters and t is the elapsed time in seconds.

Then,

h(t) = 0

-4.9t^2 + 98t = 0\\-4.9t(t - 20) = 0\\\\t - 20 = 0

t = 20

Thus, The projectile hits the ground after 20 seconds.

Learn more about projectile here;

brainly.com/question/11422992

#SPJ1

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