1.A train starts from rest at station A and accelerates at 0.5m/s^2 for 60s. Afterwards it travels with a constant velocity for 25min. It then decelerates at 1 m/s^2 until it is brought to rest at station B. Determine the distance between the stations
2.A particle travels along a straight line with a velocity of v=(20-0.05s^2) m/s, where s is in meters. Determine the acceleration of the particle at s=15m
3.Using the Newton-Raphson Method, find the root of the polynomial f(x) = x3 – 12. Use 3.0 as an initial estimate of the root. Continue to do iterations until ?pi – pi-1? is less than 0.1. Show your calculations
4.calculate the gravitational force between the earth and the moon in newtons. the distance between the earth and the moon is 384x10^3?