Answer:
13.89 ft/s
Step-by-step explanation:
We know that the cheetah is the fastest land animal on Earth, but what if it were not allowed to run? Biologists model maximum walking speed by the equation = √, where g is the acceleration due to gravity (9.8 m/s2 or 32 ft/s2) and L is the length of the leg (in metric or standard units). In the situations below, use this information to answer the questions.
(Hint: It will be useful to know 1 m = 3.23 ft for conversions)
1. Find the maximum walking speed of a giraffe with legs 6.03 feet long.
Solution:
Speed is the ratio of the total distance travelled to the time taken to reach this distance. Speed is given by the formula:
Speed = distance / time
Given that the maximum walking speed (s) is given by the equation:
= √, where g is the acceleration due to gravity (9.8 m/s² or 32 ft/s²) and L is the length of the leg (in metric or standard units).
The giraffe has a length of leg (L) of 6.03 feet, hence:
s = √(32 ft/s² * 6.03 ft)
s = √192.96
s = 13.89 ft/s
The wire is 4 meter and 8 centimeter long, that is to say 408 centimeter long total, and it is divided in 10 pieces, so we do:
tia = 408/10 = 40.8 cm
That is to say that Tia's wire pieces are 40.8 cm long
For Marta's wire, it is 540 centimeter long and is divided into 9 pieces, that is:
marta = 540/9 = 60 cm
Then Marta's wires are longer than those from Tia's, let's see for how much:
marta - tia = 60 - 40.8 = 19.2
therefore, Marta's wires are longer than Tia's wires for 19.2 cm
Answer:
12 minutes
Step-by-step explanation:
30/15=2 you can multiply 6 by 2 = 12
$7 represents 100%
? Represents 28%
Those are in proportion so we can cross multiply to find the missing part
?=28•7/100= 196/100= 1.96 is the profit
7+1.96= $8.96 is the retail price
