Science

posted by .

7)
An apple falls from a tree (h = 9m). In the absence of air resistance,
how fast is it traveling when it strikes the ground?

  • Science -

    potential energy is mgh = m(9.8)(9) = 88.2m where m is the mass of the apple.

    given that there is no air resistance, all of these potential energy is converted to kinetic energy during the fall

    i.e. Ep = Ek

    so, Ek = 1/2mv^2 = Ep

    1/2mv^2 = 88.2m

    v^2 = 88.2m/0.5m ...so you can solve for velocity.

    hope that helps..

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a 145g baseball is dropped from a tree 13.0m above the ground. with what is the velocity of the baseball at the ground after it falls 13.0m?
  2. physics

    (a) Neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 2.0 s?
  3. Physics

    Maria throws an apple vertically upward from a height of 1.3m unit an initial velocity of velocity of 12.4m/s 1. will the apple reach a friend in a tree house 5.3m above the ground. 2. If the apple is not caught, how long will the …
  4. physical sciene

    Neglecting air resistance, how fast is the object traveling when it strikes the gounnd at the end of 3.8s?
  5. physics

    An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 5.7 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope?
  6. Physics

    7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?
  7. Physics

    An archer stands a horizontal distance d= 55 m away from a tree sees an apple hanging from the tree at h= 12 m above the ground. The archer chooses an arrow and prepares to shoot. The arrow is initially 1.5 m above the ground. Just …
  8. physics

    An archer standing a horizontal distance d=50m away from a tree sees an apple hanging from the tree at h=12m above the ground. The archer chooses an arrow and prepares to shoot. The arrow is initially 1.5m above the ground. Just as …
  9. science

    An apple falls from a tree and hits the ground 10.4 m below. With what speed will it hit the ground?
  10. physics

    when an apple falls from a tree, and strikes the ground without bouncing, what happens to its momentum?

More Similar Questions