# Physics

posted by .

A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 406 m and ignoring air resistance, find the speed with which the penny strikes the ground.

• Physics -

Vf^2 = Vo^2 + 2g*d,
Vf^2 = 0 + 19.6*406,
Solve for Vf.

## Similar Questions

1. ### physics

A penny is dropped from the observation deck of the Empire State building (370 m above ground). With what velocity does it strike the ground?
2. ### physics

A slingshot fires a pebble from the top of a building at a speed of 16.0 m/s. The building is 32.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, …
3. ### Physic

In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level desk. By doing this at the right speed, he can get the penny to accelerate vertically, into the airstream, …

1) A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 407 m and ignoring air resistance, find the speed with which the penny strikes the ground. I am not sure how to start this. …
5. ### physics

A penny is dropped from rest from the top of the Trump Tower in New York City. Considering that the height of the building is 283 m and ignoring air resistance, find the speed with which the penny strikes the ground.
6. ### Physics

A baseball is projected horizontally from the top of a building with an initial speed of 15 m/s. The ball strikes the ground 25 m from the base of the building. a. How long will it be in the air?
7. ### physics

A man stands at the top of a 27-m high building and throws a penny straight downward. If the penny has an initial velocity of -3.9 m/s, what is the velocity of the penny in m/s when it hits the ground?
8. ### physics

A penny is dropped from the top of a building 310 m high. Ignoring air resistance, if the penny falls straight down, with what speed would it hit the ground?
9. ### Calculus

if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground?
10. ### Algebra 1

A penny is dropped from the top of a 345 foot building. Time is being measured in seconds. A.) Write an equation that models the scenario B.) How far is the penny from the ground after 2 seconds?

More Similar Questions