Answer:
The speed is 20.8 m/s
Step-by-step explanation:
If a projectile ascends vertically, and after 3 seconds it reaches its maximum height, calculate the velocity that it carries to the middle of its downward trajectory
Let the maximum height is h and initial velocity is u.
From first equation of motion
v = u + at
0 = u - g x 3
u = 3 g.....(1)
Use third equation of motion
Let the speed at half the height is v'.
Answer:
width = 6 and length = 8
Step-by-step explanation:
perimeter = 2*(length + width). (1)
and we have that length = 2 + width
in (1)
28 = 2 *(width + 2 + width)
14= 2*width +2
width =6
and so length will be 8
Answer:
EF = 44 ft
Step-by-step explanation:
Given that ABCD is congruent to EFGH, it follows that their corresponding lengths and angles would be congruent to each other.
This means, for the sides:
AB = EF,
BC = FG,
CD = GH
AD = EH.
Therefore, if AB = 44 ft, corresponding side, EF = 44 ft
Easy here
(4x800)+(4x70)+(4x5)
