A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60cm/s The function of the radius r in terms of I is Select one a. r(t)=60t b. r(t)=30t

Question

A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60cm/s The function of the radius r in terms of I is Select one a. r(t)=60t b. r(t)=30t

Answer 1

The question describes a ripple traveling outward at a constant speed. This means that the distance it travels (the radius r) is directly proportional to the time t it has been traveling. The constant of proportionality is the speed at which the ripple is traveling, which is given as 60 cm/s. Therefore, the function relating the radius r to the time t is r(t) = 60t. This means that for every second that passes, the radius of the ripple increases by 60 cm. Option a is correct.

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A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60cm/s The function of the radius r in terms of I is Select one a. r(t)=60t b. r(t)=30t

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