The CN Tower in Toronto has a lookout level that is 346 m above the ground. A gull landing on the guardrail causes a pebble to all off the edge. The speed of the pebble as it falls to the ground is a unction of how far it has fallen. The equation for nis function is v(d) = \2gd, where d is the distance, in metres, the pebble has fallen (d) is the speed of the pebble, in metres per econd (m/s) g is the acceleration due to gravity-about 9.8 etres per second squared. a) What is the speed if the pebble falls 340 m? b) How far has it fallen when its speed is %3D 54m/s?? c) Does the speed double when the distance doubles?

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