# 37. a stone that is dropped from the top of a building strikes the ground in 10 seconds.

a. compute the height of the building in feet.

b. what is the velocity of the stone at the end of the 7th second?

Answers: 1

## Answers

37. a stone that is dropped from the top of a building strikes the ground in 10 seconds.a. compute t...

A. d = 980 m <-- height of building

B. V= 68.6 m/s <-- velocity of stone @ 7s

Explanation:

g=9.8m/s2 <-- gravity

t = time in seconds

d= distance travelled

d/(t)² = g

d = g * (t)²

A. d = g * (t)² where t= 10s

d = 9.8 m/s² * (10s)²

d = 980 m

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V= d/t

V= (g * (t)²) * 1/t

V= g * t

B. V= g * t where t = 7s

V= (9.8m/s²) * 7s

V= 68.6 m/s

Characteristic of visible light is color. ... The color components of visible light include violet, blue, green, yellow to orange, bright red and dark red. The full range of visible light wavelength stretches from about 340 nanometers to around 750 nanometers.

Both Boy X and Y are moving backwards

Explanation:

3rd Law of motion