Question

Legend states that while sitting in his garden one day,

(5)

Sir Isaac Newton was struck on the head by an apple. Suppose the apple was 25 m

above his head. Use the following steps to find how long it took the apple to fall.

(i) What is the square root of 25?

(ii)The formula t =

√ℎ

4

can be used to find the time t in seconds it will take an object to

fall from a certain height h in m. How longdid it take the apple to fall?

(iii) Suppose another apple was 36 m above the ground. Use the formula to write

an equation representing the time it would have taken for the apple to hit the

ground?

(iv) Suppose another apple was 13 m above the ground. Use the formula to write

an equation representing the time it would have taken for the apple to hit the

ground?

(v) Can you write

√13

4

without a radical sign? Explain.​

Answer 1

Answer:

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