The rocket will reach the ground after 4 seconds
Step-by-step explanation:
- Step 1: Find the time when the water rocket reaches the ground.
When the water rocket reaches the ground, the height, h will be zero.
⇒ h = 20 - 5(t - 2)²
⇒ 0 = 20 - 5(t - 2)²
⇒ 5 (t - 2)² = 20
⇒ (t - 2)² = 4
⇒ t - 2 = √4 = 2
∴ t = 2 + 2 = 4 seconds
Answer:
(-4, 5)
Step-by-step explanation:
x will never change if reflected over it. but y will be negative. also what do you mean by y coordinate or x coordinate?
Answer:
Taking the square root
Step-by-step explanation:



Alternatively, you can use a difference of squares to factor and solve:

The difference between 32 and 24 is 8. and the difference between 24 and 17 is 7. so its going down by counting (8,7,6,5,4,3,2,1) numbers. so 2-3= -1
Answer:10 Seconds
Step-by-step explanation:
s=1600 ft
t=√(s) /4
t=√(1600)/4
t=40/4
t=10 seconds