Physics

1. if a 0.05kg coin is hanging from 22m above the ground:

a. If you drop it, how fast will the coin be moving halfway to the ground?

b. How fast will it be moving just before it hits the ground?

If you could point me the right direction with equations that would be great. I have a whole list of equations but I just don't see which ones I am supposed to you. Also, when the problem says "fast" that means velocity right?

  1. 👍 0
  2. 👎 0
  3. 👁 156
  1. fast=velocty

    a) KE= change in PE
    1/2 m v^2= mg (22/2)

    b) KE= change in PE
    1/2 m v^2=mg(22)

  2. Did you get 22/2 because it said halfway?

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    a balloon is 30m above the ground and is rising vertically with a uniform speed when a coin is dropped from it. if the coin reaches the ground in 4 seconds, what is the speed of the balloon?

    asked by amelia on July 30, 2020
  2. Calculus angle of elevation

    An observer is 31m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 22m horizontally from the observer. The angle of elevation of the elevator is the angle of the observer's line of

    asked by fredric on November 10, 2014
  3. College Algebra

    Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t

    asked by Jack on July 9, 2013
  4. Science

    You drop a 2.00 kg book to a friend who stands on the ground at distance D= 10.0 m below. If your friend’s outstretched hands are at distance d=1.50 m above the ground see the next figure, (a) how much work W_g does the

    asked by Anas alnaabi on April 22, 2020
  5. physics

    A coin is placed 14.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 31.0 rpm (revolutions per minute) is

    asked by mitchell on January 17, 2017
  1. Physics: Help

    A coin is placed 12.5 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached, at which point the

    asked by Haley on October 9, 2006
  2. physics

    a boy tosses a coin upward with a velocity of 14.7 m/s. a. find the maximum height reached by the coin. b. time of flight c. velocity when the coin returns to the hand d. suppose the boy failed to catch the coin and the coin goes

    asked by jenalyn calimag on July 31, 2013
  3. physics

    Ten , one rupees coin are put on the top at of each other on a table. Each coin has a mass 'm'. Give the magnitude and direction of - (1)- The force of 7th coin (counted from bottom) due to all coins on its top. (2)- The force of

    asked by me on October 14, 2014
  4. physics projectile - please help....

    You are in an egg drop contest which you win by breaking your egg the hardest. You drop your egg off of a 3 story building (above the ground). You can throw it up with speed 11m/s, or straight down with speed 11 m/s. Ignoring air

    asked by anonymous on September 5, 2017
  5. Physics

    A coin is placed 11.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 31 rpm is reached, at which point the

    asked by Anonymous on October 27, 2009
  6. Physics

    If you drop a raw egg on the ground, it will break. If you drop it on a saggy sheet, it does not. Explain in terms of momentum and/or impulse.

    asked by Anonymous on November 6, 2018

You can view more similar questions or ask a new question.