a ball is thrown up with an initial velocity 20m/s. using g=10m/s2,
a) what's the maximum height it can reach.
b) what is the magnitude and direction of the ball's velocity 1 second after it is thrown.
c) what is the magnitude and direction of the ball's velocity 3 seconds after it is thrown

  1. 👍 0
  2. 👎 0
  3. 👁 219
  1. a. h = (Vf^2 - Vo^2) / 2g,
    h = (0 - (20)^2) / 20 = 20m.

    b. Vf = Vo + gt,
    Vf = 20 + (-10)*1 = 10m/s,up.

    c. Vf = 20 + (-10)*3 = -10m/s,down.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the

    asked by Sarah on June 7, 2009
  2. phy

    A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.2 m/s from a height of

    asked by a on September 13, 2011
  3. pre-calc

    Physics: a ball is thrown vertically upward with an initial velocity of 80 feet per second. the distance (in feet) of the ball from the ground after t seconds if s=80t-16tt^2 a) draw the illustration b) for what time interval is

    asked by steph on November 10, 2011
  4. physics

    a ball is thrown at an initial angle of 37 and initail velocity of 23.0 m/s reaches a maximum height h, as shwon in the Figure. With what initial speed must a ball be thrown straight up to reach the same maximum height h?

    asked by Anonymous on January 3, 2011
  5. physics science

    a ball thrown vertically upward lands on the thrower's hand 24.5s. find (a) the time taken by the ball to reach its maximum height,(b) the maximum height attained by the ball, and (c) initial velocity of the ball

    asked by john on September 8, 2017
  1. physics

    A ball is thrown straight downward from the surface of the moon. Is the maximum height it reaches less than, equal to, or greater than the maximum height reached by a ball thrown upwards on the earth with the same initial speed?

    asked by tiffany on September 23, 2012
  2. Physics

    A. You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity at an angle θ with respect

    asked by Awonah on September 9, 2011
  3. math-urgent

    A ball with a mass 0.15kg is thrown upward with an initial velocity 20m/s from the roof of a building 30m high. Neglect air resistance. Find the max height above the ground that the ball reaches. Assuming the ball misses the

    asked by Anonymous on June 21, 2015
  4. Physics

    A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the

    asked by JoseF3 on October 4, 2015
  5. Physics

    A ball is thrown towards a vertical wall from a point 2m above the ground and 3m from the wall. the initial velocity of the ball is 20m/s at an angle of 30deg above the horizontal. if the collision of the ball with the ball is

    asked by ridhi on April 12, 2012
  6. Calculus 1

    A ball is thrown vertically upward from ground level with initial velocity of 96 feet per second. Assume the acceleration of the ball is a(t) = -32 ft^2 per second. (Neglect air Resistance.) (a) How long will it take the ball to

    asked by Bobby on December 3, 2018

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