Math Is Fun Forum

Melj

Guest

Quadratics Explain?

On number 41,
I get
a)0.388 seconds
and
b tells me to explain why doubling the answer from a) would not get the time it takes before it hits the court.
I don't get how to explain b) aside from actually doing the numbers.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Quadratics Explain?

Hi;

Can you copy the question, I can not see any of that?

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

thickhead

Member

Registered: 2016-04-16

Posts: 1,086

Re: Quadratics Explain?

In the equation t is measured from the time when the ball leaves the racket whereas h is height from the court. if you double the time it gives the time when the ball comes to the height of 0.5 m ,not the court level.

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