I just finished meh unit test but im scared to submit it i need some confidence <3

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration