Answer:
the height of the porch is H=1.91 m
Step-by-step explanation:
neglecting friction and assuming that the porch is horizontal, then the horizontal speed is v₀= 4 m/s and it does not change , thus he hits the base at
t= L/v₀ , L= horizontal distance
then for vertical motion , since the vertical velocity vy is 0 , the initial height is H ( the height of the porche) and the final height hf is 0 , we have
hf = H + vy*t - 1/2*g*t²
0 = H + 0 -1/2*g*t²
H = 1/2*g*t² = 1/2*g*(L/v₀)²
replacing values with g= gravity = 9.8 m/s²
H = 1/2*g*(L/v₀)² = 1/2*9.8 m/s² *( 2.5 m/ 4 m/s)² = 1.91 m
therefore the height of the porch is H=1.91 m
Answer:
5 miles
Step-by-step explanation:
if you do divide 26,400 by 5,280 the answer you would get would be five so for each mile you do it would all equal up to 5,280. Also to check your answer 5,280 times 5 is 26400
Answer:
ksue3
Step-by-step explanation:
u27wuueudieieueieidjdjjddjejejejjejdjdnejsjsjsjsjsjsjdjsjsjekekekekekskd
Perimeter of rectangle 2W +2L
Let L = 2W
2W + 2(2W) = 240 (number in question is unclear)
2W + 4W = 240
6W=240
W = 40
L = 40×2 = 80
dimensions 80x40
