Answer:
A.40 J
Step-by-step explanation:
K. E. Is 1/2 multiply by mass x velocity square
M is 5kg, v is 4m/s
1/2 x5x4x4 equals 40joules.
Speed = distance / time
since they are moving in opposite direction, the time is the sum of the two times = 2 1/2 + 4 = 6 1/2 = 13/2
speed = 585/(13/2) = 90 miles per hour.
Answer:
r = 19
Step-by-step explanation:
calculate the slope using the slope formula and equate to 4
m = 
with (x₁, y₁ ) = (- 7, 3 ) and (x₂, y₂ ) = (- 3, r )
m = 
= 
= 
, then
= 4 ( multiply both sides by 4 )
r - 3 = 16 ( add 3 to both sides )
r = 19
ANSWER:
-8
REASONING:
Because the left of 0 is negative number and the right is positive therefore if you go to the left 4 more times then it is -8
Answer:
Since f(n + 1) = f(n) - 3, we can also say that f(n - 1) = f(n) + 3.
By which we can say f(n - 3) = f(n) + 9
Since f(4) is 22, then f(1) must be 22 + 9, or 31.
