Answer:
d = 506.25 ft
Explanation:
As we know by kinematics that

here we know that initially the stone is dropped from rest from the edge of the roof
so here initial speed will be zero
now we have

also the acceleration of the stone is due to gravity which is given as

now we have

so from above equation


The train’s average speed is 80km/h
Explanation:
<u>Formula:</u>

<u>d = distance given</u>
<u>t</u><u> </u><u>=</u><u> </u><u>the amount of time </u><u>given</u>
<u>Substitute the given values into the formula for velocity</u><u>:</u>

velocity is shortened for v.
8 (distance) divided by 4 (time) equals the velocity.
<u>Solve:</u>

The velocity of the toy car equals: B. 2 m/s.
My guess is; The warmer ocean adds water vapor to the air mass.
I'm really sorry if I'm wrong
The energy carried by a photon is equal to
(Planck's Konstant) times (the frequency of the photon) .
Planck's konstant is 6.626 x 10⁻³⁴ m²-kg/s (rounded)