Post a New Question

college

posted by .

a ball is thrown vertically upward from the ground with the velocity of 30m/s,
a)how long will it take to rise to its highest point?
b)how high does the ball rise?
c)how long after projection will the ball have the velocity of 10m/s upward?
tnx

  • physics -

    The variation of height (y, in meters) with time (t, in seconds) is given by the equation
    y = 30 t - (g/2) t^2
    g is the accelertaion of gravty, 9.8 m/s^2.

    (a) The highest value of y is obtained when the velccity V is zero.
    V(t) = dy/dt = 30 - gt = 0
    Solve for t.

    (b) Use the value of t that you get in part (a) to solve for y(t) at that time.

    (c) Set V(t) = +10 and solve for t.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A ball is thrown vertically upward with a speed of 25.0 m/s from a height of 2.0 m. How high does the ball rise?
  2. Physics

    a ball is thrown vertically upward from the ground with the velocity of 30m/s. a) how long will it take to rise to its highest poitn?
  3. physics

    A ball is thrown vertically upward with a speed of +13.0 m/s. (a) How high does it rise?
  4. Physics please help!!!!!!!

    A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m. (a) How high does the ball rise from its original position?
  5. physics

    A ball is thrown vertically upward with a speed of +10.0 m/s. (a) How high does it rise?
  6. physics

    A ball is thrown vertically upward with a speed of +10.0 m/s. (a) How high does it rise?
  7. physics

    A ball is thrown vertically upward with a speed of 19.0 m/s. (a) How high does it rise?
  8. Physics

    A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise?
  9. physics

    A ball is thrown vertically up from the edge of a 150 m building with a veloicty of 10m/s. (A) how high did the ball rise?
  10. physics

    A ball is thrown vertically upward with a speed of 19.0 m/s. (a) How high does it rise?

More Similar Questions

Post a New Question