You just identified the image as a "reflection", so it's a pretty good bet that
the phenomenon involves reflection somehow.
Your dog can see his reflection in a mirror inside the house just as easily
as in the surface of the pond. My dogs do it all the time. The phenomenon
doesn't require water.
It's reflection of light waves.
Answer:
Option C is correct
Explanation:
"The time is determined by the vertical distance. The formula is sqr(2d/a) = t. There still is no acceleration in the horizontal direction."
For the first drive
d = d
t = sqr(2d/a)
r = v
For the Second drive
d = ??
t = sqr(2d/a)
r = 2v
Since the times are same, equate the results.
t = d/v = d1/2v
v*d1 = 2v*d The v's cancel because they are related.
d1 = 2d.
You go twice as far as you did before.
Option C is correct
So the answer is about 18.24 m/s
this is why:
the equation for calculating the height position from the acceleration due to gravity is
h(t) = -1/2(g)t^2 + vt + p
so in this case g, or the acceleration of gravity is 9.81, the initial velocity (v) is 0, and the initial position (p) is 17. once we plug in these numbers we get the equation h(t) = -4.91t^2 + 17
we know that height is zero when it hits the ground so we can use the quadratic equation to solve for when y is zero. since time cant be negative, then out answer is the positive zero of this equation, or 1.86.
once we know this then we can plug this amount of time into the equation
v(t) = gt + v
this means that the velocity after a certain time (t) is equal to the gravitational force, in this case 9.81, multiplied by the amount of time passed plus the initial velocity (v).
since we know the initial velocity is zero and the time that the balloon hit the ground (1.86), we can multiply the gravitational force, 9.81, by the time when it hits the ground (1.86) to get 18.24 m/s
Answer:
average velocity include total displacement whereas average speed include total distance
The quickest technique to calculate the volume of a cube-shaped table is to use a ruler to measure one side, then multiply that figure by three. Option B is correct.
<h3 /><h3>How do you calculate the volume of a cube?</h3>
Assume the side length of the cube under consideration is L units. The volume of the cube is then equal to L³ cubic units.
The volume of a cube is;
V = L³
Ubes have equal-length sides. The quickest technique to calculate the volume of a cube-shaped table is to use a ruler to measure one side, then multiply that figure by three.
Hence option B is correct.
To learn more about the volume of a cube refer
brainly.com/question/26136041
#SPJ1