Answer:
t₁ = 2,75 sec
Step-by-step explanation:
The ball will get h maximum when dh/dt ( its vertical component of the speed is equal to 0. At this moment the ball has flown half of the total flight time
Then
h(t) = - 4t * ( 4*t - 11 )
h(t) = - 16*t² + 44*t
Taking derivatives on both sides of the equation we get:
dh/dt = - 32*t + 44
dh/dt = 0 ⇒ -32*t + 44 = 0
t = 44/32 ⇒ t = 1,375 s
So twice this time
2*t = 2 * 1.375
Total time t₁ = 2,75 sec
Answer: the first one
Step-by-step explanation:
Answer:
The area is 60
Step-by-step explanation:
You had to multiply 5×4×3
Answer:
A: 10:1. 24 inch seat = 2 feet. 2 x 30 seats = 60-foot section. 60:6 simplified = 10:1. Lights. Q: Your stadium will have 8 large light towers to illuminate the field for night ... Question 1: The stadium design currently has a 3:2 ratio of premium seats to ... bleacher seats (20,000 ÷ 5 = 4,000 bleacher seats, and 20,000 – 4,000 ...
Step-by-step explanation: