Physics(Please respond)

posted by .

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. Thank you!

  • Physics(Please respond) -

    V = sqrt(2 g X)

    Why? Because
    M g X = (1/2) M V^2

Respond to this Question

First Name
School Subject
Your Answer

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, …
  4. Physics

    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.
  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. physics

    A brick is dropped (zero initial speed) from the roof of a building. The brick strikes the ground in 3.05 s. You may ignore air resistance, so the brick is in free fall. (a) How tall, in meters, is the building?
  10. 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?

More Similar Questions