1. Questions

Algebra

Alvin throws the football to a receiver who jumps up to catch the ball. The height of the ball over time can be represented by the quadratic equation -4.9t^2 + 7.5t + 1.8 = 2.1 . This equation is based on the acceleration of gravity -4.9 m/s^2, the velocity of his pass is 7.5 m/s and releases the football at a height of 1.8 meters, and the height where the receiver catches the ball of 2.1 meters. Put the equation in standard form and then solve by using the quadratic equation.

I don't understand any of this, could someone help me figure out how to put it in both the standard form and quadratic equation.

  1. 👍
  2. 👎
  3. 👁
Klauus

  1. -4.9t^2 + 7.5t + 1.8 = 2.1

    we usually start with a positive square term

    4.9t^2 - 7.5t + 0.3 = 0

    for a quadratic in the standard form of
    ax^2 + bx + c = 0
    x = (-b ± √(b^2 - 4ac) )/(2a)

    sub in the corresponding values from my equation and find x

    1. 👍
    2. 👎
    Reiny

  2. Okay, I did what you said and for x I got= -5.43152 now do I sub that into the top equation but instead of x I put it in for t?

    1. 👍
    2. 👎
    Klauus

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    Which of the following scenarios does NOT give an example of velocity? The bird flew north.*** The train went west at a speed of 100mph. The hawk circled its prey in the air at a speed of 10 miles per hour. The quarterback threw

  2. physics

    In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of 4.5m/s, grabs him. The tackler holds onto the receiver, and and the two move off together with a

  3. Physics ( check answers)

    Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got

  4. physics

    A football is thrown from the edge of a cliff from a height of 22 m at a velocity of 18 m/s [39degrees above the horizontal]. A player at the bottom of the cliff is 12 m away from the base of the cliff and runs at a maximum speed

  1. physical science

    A football player picks up.the football runs with it and throws it to a teammate, during which of these actions is work being done on the football?

  2. Physics

    A quarterback throws a football toward a receiver with an initial speed of 18 m/s, at an angle of 29 degrees above the horizontal. At that instant, the receiver is 19 m from the quarterback. With what constant speed should the

  3. physics

    A quarterback throws the football to a stationary receiver who is 18.3 m down the field. Football is thrown at an angle of 44.9 degrees to the ground. Acceleration is 9.81 m/s2. What initial spped must the quarterback throw ball

  4. science

    A Football is thrown by a quarterback to a receiver. When the quarterback throws it, the ball is at the height of 6 feet above the ground. When the receiver catches it, he is 30 yards away from the quarterback and the ball is

  1. physics

    An LSU football defender is 6 m behind a Georgia Tech receiver who has the football and is d meters from making a touchdown. If the LSU player is running at 5 m/s and the receiver is running at 4 m/s, what is the furthest

  2. Physics

    A boy 12.0 m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. If the boy throws the ball horizontally at 8.50 m/s, (a) how fast must the

  3. physics

    A quarterback throws a football toward a receiver with an initial speed of 21 m/s at an angle of 30° above the horizontal. At that instant, the receiver is 12 m from the quarterback. In what direction and with what constant speed

  4. Physics ( check answers)

    Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got

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