Physics

posted by .

A soccer ball is kicked with an initial horizonal velocity of 18 m/s and an initial vertical velocity of 18 m/s.

1) What is the initial speed of the ball?

2)What is the initial angle of the ball with respect to the ground?

3)What is the maximum height the ball goes above the ground?

4) How far from where it was kicked will the ball land?

5)What is the speed of the ball 2.1s after it was kicked? and how high above the ground after it was kicked?

  • Physics -

    1) The initial speed is V = sqrt(18^2 + 18^2)

    2) µ = arctan(1.0) = 45º

    3) The maximum height reached derives from h = V^2(sin^2(µ))/2g.

    4) The distance traveled by the ball derives from d = V^2(sin(2µ))/g.

    5) From Vf = Vo + gt, the time to reach the maximum height derives from 0 = 18 - 9.8t making t = 1.836sec, telling us that the ball is on the way down at 2.1sec, .264sec from the high point.
    The vertical speed at this point is .264(9.8) = 2.58m/s making the net speed sqrt(2.58^2 + 18^2)
    I'll leave the height of the ball at 2.1sec. for you to work out now that you have all the data.

  • Physics -

    A ball is thrown horizontally from a height of 29 m and hits the ground with a speed that is 4 times its initial speed
    What is the initial speed

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a soccer ball is kicked with an initial velocity of 5.0 m/s^2 in a direction of 30 degrees above the horizontal a. what are the initial components of the velocity?
  2. physics

    A ball is thrown with an initial velocity of 20 meters per second at an angle of 60° with the horizontal ground surface. Find the following: a. the horizontal velocity of the ball b. the ball’s initial vertical velocity c. the range …
  3. Physics - 2-D kinematics

    A soccer ball is kicked with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 16 m/s. I've calculated: Initial Speed: 25.61 m/s Angle: 38.66 degrees Maximum Height it reaches: 13.06 m Distance kicked: 65.29m …
  4. physics

    a ball (mass = 0.250 kg) is kicked off a porch (h = 1.50 m above the ground) with an initial velocity of 17.0 m/s at an unknown angle. what is the initial KE. What is the initial PE. what is the KE and speed of the ball when it is …
  5. Physics

    A soccer ball is kicked with an initial horizontal velocity of 19.0 m/s and an initial vertical velocity of 14.0 m/s 6) How high above the ground is the ball 1.1 seconds after it is kicked?
  6. Physics

    A soccer ball kicked on a level field has an initial vertical velocity component of 15 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air?
  7. 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 distance …
  8. Physics

    Initial Statement: A soccer ball is kicked with an initial horizontal velocity of 15 m/s and an initial vertical velocity of 14 m/s. 1) What is the initial speed of the ball?
  9. physics

    A soccer ball is kicked with an initial horizontal velocity of 16 m/s and an initial vertical velocity of 17 m/s. 3) What is the maximum height the ball goes above the ground?
  10. physics

    A soccer ball is kicked with an initial horizontal velocity of 16 m/s and an initial vertical velocity of 17 m/s. 1) What is the initial speed of the ball?

More Similar Questions