A solar fire starter is designed so that its cross-sections are in the shape of a parabola. Given that the diameter of the solar fire starter at its opening is 39 centimeters and the igniter is located 10 centimeters from the base along the axis of symmetry, what is the depth of the fire starter

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.