During the pyramid-building era the ancient Egyptians used two units of length, the palm and the ell. An ell was 7 palms and a p
1 answer:
Knowing that the units of the ancient Egyptians were palm and ell, where 1 ell was 7 palms and 1 palm was 3 inches, the speed of a hawk tracked as 3 ells/s is equal to 63 in/s. The given options are not the correct ones.
We have that:
1 ell = 7 palms
1 palm = 3 inches
v: is the speed of the hawk = 3 ells/s
To find the <u>speed of the hawk</u> in inches per second, we need to convert 3 ells/s to in/s, as follows:
Therefore, the speed of the hawk is 63 inches per second. The given options are not the correct ones.
You can find another example of speed here:
I hope it helps you!
You might be interested in
Answer:
Given: Initial Velocity:0
Velocity: 25 m/s
Time :10 sec.
Acclereation?.
Use formula for acceleration,
Divide units to
So our acceleration is
If you want to, you can use kinematic equation
vi is inital velocity, since v1=0 we just have
Which is the same as first step, so we would get 2.5 m/s^2
Answer:
Acceleration = 2.35 m/
Speed = 8.67 m/s
Explanation:
The coefficient of friction , u =0.3
The angle of incline = 30°
The two forces acting on block are weight and friction.
weight along the incline = mg cos60° = = 0.5 mg
Friction along incline = umg cos30° = mg
Friction along incline = 0.26 mg
Net force acting on the weight = (0.5 - 0.26) mg = 0.24 mg
Acceleration = = 0.24 g = 2.35 m/
The height of incline = 8 m
Length of the inclined edge = 16 m
v= 8.67 m/s