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Perplex
IB Math AAHL
/
Quadratics
/
Problem Bank
IB Math AAHL
/
Quadratics
/
Problem Bank

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Get hints, ask questions, and work through this problem step by step

I'm Plex, here to help with problems on this worksheet!
[Maximum mark: 4]

A ball is thrown upwards and its height above the ground, in metres, after ​t​ seconds is modeled by

​
h(t)=−5t2+20t+2.
​
  1. Write down the initial height of the ball.

    [1]

    To earn a crown, get your answer ready before you reveal the options!

  2. Find the maximum height of the ball.

    [1]
  3. Solve ​h(t)=0, and state the solution's significance in the context of the problem.

    [2]
[Maximum mark: 4]

A ball is thrown upwards and its height above the ground, in metres, after ​t​ seconds is modeled by

​
h(t)=−5t2+20t+2.
​
  1. Write down the initial height of the ball.

    [1]

    To earn a crown, get your answer ready before you reveal the options!

  2. Find the maximum height of the ball.

    [1]
  3. Solve ​h(t)=0, and state the solution's significance in the context of the problem.

    [2]