How can answer this question ,help please?
Information:
A ship travels at a constant speed of 25 kilometres per hour (Kph) in a straight line from port A located at position (x_A, y_A) =(-100, -100) to port B at (x_B ,y_B )=(300 ,100)
During its journey ,the ship passes two lighthouses ,L_1 and L_2, which are located at positions (0,0) and (200.0), respectively.
Question:
Complete the square gives the following result for d^2_2
d^2_1=200000((t-3/10)^2 +1/100).
Explain how d_1 varies as t increases from 0 to 1. Determine the shortest distance between the ship and lighthouse L_1, to the nearest kilometre.
please need help
thanks for reading