In a pool at an aquarium, a dolphin jumps out of the water travelling at 20 cm per second. Its height above water level after t seconds is given by h=20t - 16t².



Based on the above, answer the following questions :

(i) Find zeroes of polynomial p(t) = 20t -16 t²
(ii) Which of the following types of graph represents p(t) ?



(iii) (a) What would be the value of h at t=3/2? Interpret the result.

OR

(iii) (b) How much distance has the dolphin covered before hitting the water level again?

Solution

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