physics

posted by .

A steel ball rolls with constant velocity across a tabletop 0.950m high. IT rolls off and hits the ground +0.352m horizontally from the edge of the table. How fast was the ball rolling?

  • physics -

    Get the time to fall from the height, H = 0.950 m. Call that time T. You will need to use the acceleration of gravity (g) to compute T.
    H = (g/2) T^2
    Haven't you seen that equation before for falling bodies?

    Then use the relationship
    V T = 0.352
    to get V

  • physics -

    A steel ball rolls with constant velocity across a tabletop 0.950m high. IT rolls off and hits the ground +0.352m horizontally from the edge of the table. How fast was the ball rolling?

    GIVEN:

    Vi = 0 m/s
    d = 0.950 m ---> 0.352 m
    a = 9.81 m/s^2
    t = ?

    d = Vit + 1/2 at^2

    0.352 = 1/2 (9.82 m/s^2) (t)^2

    0.352 = 4.905t^2

    --> Divide by 4.095

    square root - 0.071763507 = t^2

    0.26 s = t

  • physics -

    1.35 m/s

  • physics -

    8.0

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics - Projectile Motion

    A ball rolls horizontally off the edge of a tabletop that is 1.60 m high. It strikes the floor at a point 1.58 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air?
  2. Math/Physics

    A ball rolls horizontally off the edge of a tabletop that is 1.60 m high. It strikes the floor at a point 1.58 m horizontally away from the table edge. (Neglect air resistance.)How long was the ball in the air?
  3. physics

    A ball rolls horizontally off the edge of a tabletop that is 1.0m high. It strikes the floor at a point 1.5m horizontally away from the edge of the table. Find the speed when the ball left the table. Find the time it takes to fall …
  4. Physics

    A ball rolls horizontally off the edge of a tabletop that is 1.80 m high. It strikes the floor at a point 1.42 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air?
  5. Physics

    A small ball rolls horizontally off the edge of a table that is 1.20 m high. It strikes the floor at a point 1.52 m horizontally from the table edge. How long is the ball in the air?
  6. physics

    A ball rolls with a speed of 6.4 m/s toward the edge of a table that is 0.7 m above the floor. The ball rolls off the table. a. Find the magnitude of the balls velocity when it hits the floor. m/s b. At what angle, measured from the …
  7. physics

    a steel ball rolls with a constant velocity across a tabletop 0.91 m high. it rolls off the table and hits the ground 0.77 m from the edge of the table. how fast was the ball rolling?
  8. Physics

    A small ball rolls horizontally off the edge of a tabletop of height h. It strikes the floor a distance x horizontally away from the edge of the table. (Use any variable or symbol stated above along with the following as necessary: …
  9. Physics

    A ball is rolled off a table that is 0.481 m above the floor. The ball is rolling with a velocity if 1.8 m/s as it goes off the edge of the table. At the exact instant the first ball rolls off the table a second ball is dropped from …
  10. Physics

    A steel ball rolls off a flat table of height 1.05 m with a velocity of 1.90 m/s a) How long will it take the ball after leaving contact with the table to hit the ground?

More Similar Questions