Set \( h(t) = 0 \): \( -5t^2 + 20t + 45 = 0 \)
Related Articles
- \( a_{10} = 350 - 288 = 62 \)
- #### 10th term: 62
- A ball is thrown upward from a 45-meter tall building with initial velocity 20 m/s. Its height is modeled by \( h(t) = -5t^2 + 20t + 45 \). When does it hit the ground?
- Divide by -5: \( t^2 - 4t - 9 = 0 \)
- Use quadratic formula: \( t = \frac{4 \pm \sqrt{16 + 36}}{2} = \frac{4 \pm \sqrt{52}}{2} = \frac{4 \pm 2\sqrt{13}}{2} = 2 \pm \sqrt{13} \)
- Only positive root: \( t = 2 + \sqrt{13} \approx 5.605 \) seconds
Trending Articles
The Secret Phantasy Star Universe Server No One Knows About—Until Now
EFT Kappa Container Opening: Is The Risk Worth The Reward?
How I Lost My Last Game Thanks to Hooded Hydra
Unlock the Secret Patricia Martin Lucky Star Hidden Achievement
Monster Hunter Wilds: The Concurrent Player Count Surprise You Haven't Seen
Is Code Red Restaurant The Hidden Boss Level Of Dining?
This Dragon Claw Valley Strategy Will Make You Unstoppable
Level Up Your Life: Get Hired at Fantasy Flight Games Star Wars
What Do These Mysterious Chainsaw Man Codes Actually Do
Why Stickman Games Are The Most Addictive Online Craze