Physics

In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.3 m/s at an angle of 15 degrees below the horizontal. It is released 0.80m above the floor.

What horizontal distance does the ball cover before bouncing?

(delta)y = (Voy)(t) - (1/2)gt^2
(delta)y = (Vo)sin(teta)t - (1/2)gt^2

-0.80 = -4.9t^2 - 4.3sin15(t)
4.9t^2 + 4.3sin15(t) - 0.80 = 0

ax^2 + bx + c = 0

x = - (4.3sin15) +/- (sq root) (4.3sin15)^2 - 4 (4.9)(-.80)

divided by 2 (4.9)

x1 = .27
x2 = - .50

I know X2 cancels out because it's a negative number.


Then, I used

(delta)x = Vox x t
(delta)x = 4.3 m/s x .27 s
(delta)x = 1.161 m

But the answer is 1.3 m, I think I did something wrong in the quadratic equation. I'm really confused, thank you for any help

  1. 0
  2. 22
asked by Priscilla
  1. 4.9 t^2 +1.113 t - 0.80 = 0
    t = [-1.113 +sqrt(1.2386 +15.68]/9.8
    = 3.002/9.8 = 0.3061 s
    X = Vo *cos15*0.3061 = 1.27 m

    You must have done the quadratic wrong, for t. You also forgot a cos15 factor for the horizontal motion.

    posted by drwls
  2. ok thank you

    posted by Priscilla

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.7 m/s at an angle of 15.4° below the horizontal. It is released 0.83 m above the floor. What horizontal distance
  2. physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.9 m/s at an angle of 13.8° below the horizontal. It is released 0.65 m above the floor. What horizontal distance
  3. physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.9 m/s at an angle of 13.8° below the horizontal. It is released 0.65 m above the floor. What horizontal distance
  4. Physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.9 m/s at an angle of 25 degrees above the horizontal. It is released 0.75 m above the floor. What horizontal
  5. physics

    In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 3.1 m/s at an angle of 15.0° below the horizontal. It is released 0.82 m above the floor. What horizontal distance
  6. engilsh

    I cant figure out the answer to dis queston. What type of poem is this? Bounce, bounce, Oh, bouncing ball, In the gym or in the hall, On the rim against the wall, Off the head, off the foot, On the court or out of bounds, Bounce,
  7. physics

    When baseball players throw the ball in from the outfield, they sometimes allow it to take one bounce before it reaches the infield on the theory that the ball arrives sooner that way. Suppose the angle at which a bounced ball
  8. Physics

    Trailing by two points, and with only 1.00 s remaining in a basketball game, a player makes a jump-shot at an angle of 35.0o with the horizontal, giving the ball a velocity of 8.50 m/s. The ball is released 0.25 m below the height
  9. BIOMECHANICS

    The NCAA requires that a basketball dropped from a height of 1.83 m (measured to the bottom of the ball) bounce to a height of 1.24 to 1.37 m (measured to the top of the ball). Assuming the diameter of a typical basketball is 0.25
  10. Algebra 2

    A ball is dropped from 400 ft what is the height of the ball on the 6th bounce? 1 bounce =280 ft 2 bounce= 196 ft 3 bounce = 137.2 How do I figure this out?

More Similar Questions