B bsbdhdbhhdjddjdjdndhdhdhdgdggdhdhdhdhdhdhdhdhdhdhd
Answer:
3
Step-by-step explanation:
Answer:
a- 32,52
b-20+32=52
Step-by-step explanation:
I think there is only one 4
as following 4,8,12,20
4+8=12
8+12=20
20+12=32
20+32=52
52+32=84
84+52=136
136+84=220
136+220=356
so 4,8,12,20,32,52,84,136,220,356
Step-by-step explanation:
T = time in seconds
H = distance
Tground = time to return to ground
Tmax = time at maximum height
H = -16T^2 + 672T...eqn 1
projectile returns to ground at H =0,
subs for H in eqn 1...
0 = -16T^2 + 672T
solving for T we get...
16T^2 = 672T
=> Tground = 42secs
Tmax = 0.5 Tground = 21secs