Calculus

Water is discharged from a pipeline at a velocity v (in ft/sec) given by = 120p01/2), where p is the pressure (in psi). If the water pressure is changing at a rate of oas7 pal/ sec, find the acceleration (dv/dt) of the water when p = $90 pai. O A) 46.1 ft/sec 2 O B) 1230 ft/sec2 O C) 78.1 ft/sec 2 O D ) 20.9 ft / sec 2 Question 4 (1 point) Solve the problem. Round your answer, if appropriate. One airplane is approaching an airport from the north at 151 km/hr. A second airplane approaches from the east at 203 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 26 km away from the airport and the westbound plane is 15 km from the airport. OA) -116 km/hr O B) -232 km/hr OC) -464 km/hr OD) -348 km/hr